Roughly 40 integrated business apps forming a full ERP: Odoo's open-source suite runs companies end to end. The Community Edition, licensed LGPL-3.0, ships roughly 40 apps covering CRM, sales, invoicing, basic accounting (journals, chart of accounts, taxes, reconciliation), inventory and warehouse management with multi-step routes, manufacturing with BOMs and work orders, purchasing, project management, timesheets, HR, a website builder, and eCommerce. Each app works standalone, but they share one PostgreSQL database and one data model, so a confirmed sale updates stock, triggers procurement, and posts invoices without integration glue. The modular design means you enable only the apps you need and extend with 40,000+ community modules from the Odoo app store covering nearly any vertical requirement. Inventory supports multi-warehouse stock, reordering rules, and lot and serial tracking with barcode-ready operations; manufacturing ties BOMs, work orders, and work-center routing directly to sales demand and stock levels; and the website builder sells straight from your product catalog with payment provider integrations. You can start with just CRM and invoicing on day one and switch on inventory or eCommerce later - new apps integrate with existing data instantly because the schema is shared. The server is Python with an XML/JavaScript view layer, and because data lives in plain PostgreSQL there is no proprietary format: you can query, back up, migrate, and extend business data directly, with unlimited users and no per-seat licensing - where enterprise ERP pricing is per user per month, headcount here costs nothing.

With over 37,800 GitHub stars and active development since its first release in 2008, ERPNext is the most-starred open-source ERP system — delivering accounting, inventory management, manufacturing, CRM, project tracking, asset management, HR, and point-of-sale capabilities through a unified web interface built on the Frappe Framework's metadata-driven architecture. The accounting module handles multi-company consolidation, multi-currency transactions, tax templates for GST and VAT, bank reconciliation, and automated journal entries with real-time profit and loss, balance sheet, and cash flow reporting. Manufacturing covers production planning with multi-level bill of materials, work order scheduling, capacity planning, subcontracting, and quality inspection at each production stage. Inventory tracks stock across multiple warehouses with batch and serial number tracing, automatic reorder levels, landed cost calculations, and perpetual inventory valuation using FIFO or moving average methods. The CRM module manages leads, opportunities, and customer communication with email integration, while project management tracks tasks, timesheets, and Gantt-based scheduling with budget controls. Custom applications extend functionality through the Frappe ecosystem without forking the core codebase, and the REST API enables integration with payment gateways, shipping providers, and third-party services. Deployable via Docker Compose or the bench CLI tool with MariaDB and Redis. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

Apache OFBiz is the enterprise resource planning system a company installs when accounting, inventory, orders, and the factory floor must all agree with each other in real time. One shared data model connects the modules, so a sales order entered by the CRM team immediately reserves stock in the warehouse, schedules a pick list, and posts the receivable to the general ledger when it ships. The catalog manager handles unlimited stores, categories, and product variants with price rules and a promotion engine, and the built-in e-commerce storefront and point of sale sell from the same inventory your warehouse counts. Manufacturing plans production with bills of materials, routings, and MRP runs that propose purchase orders for missing raw materials, then costs every job as it moves through the shop. Accounting is proper double-entry: accounts receivable and payable, invoicing, payments, fixed assets with depreciation, budgets, and financial reports across multiple organizations. Facility tools manage several warehouses with lot and serial tracking, receiving, returns, and physical inventory counts, while the HR module keeps positions, contracts, expenses, and performance reviews. Party management unifies customers, suppliers, and employees into one record, REST and service APIs expose every function to integrations, and project and work effort tools track tasks against orders. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

With 7,400+ GitHub stars, 280+ contributors, and 99 releases spanning 15 years of active development since 2011, Dolibarr is the modular ERP and CRM platform that scales from freelancers tracking invoices to manufacturing companies managing full production workflows — all within a single PHP application requiring only a web server and database. Enable exactly the modules your business needs: CRM with leads, proposals, and online contract signing; invoicing with customer and supplier management, credit notes, and SEPA direct debit; double-entry accounting with bank reconciliation and margin analysis; stock and warehouse management with barcode scanning, batch and lot tracking, and product variants; bill of materials and manufacturing orders with workstation scheduling; HR with employee records, leave management, expense reports, recruitment pipelines, and timesheets; project and task management with shared iCal calendars; and a ticket system with integrated knowledge base for customer support. TakePOS provides a touch-optimized point-of-sale interface for retail shops, bars, and restaurants with floor and table management, QR code self-ordering, automatic stock decrements, and Stripe terminal integration. Payment processors connect via PayPal, Stripe, and Paybox. The marketplace offers over 1,000 third-party add-ons, and the low-code Module Builder enables custom extensions without programming. Deploy via the official Docker image with MariaDB, DEB and RPM packages for Linux, or manual installation on any PHP-capable server. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.

Your next business system does not need a year of scaffolding: Open Mercato hands you a running CRM, ERP, and commerce back office, and your team builds only the logic that makes your company different. Deals and pipelines live next to the product catalog, so a quote pulls real variants, price lists, and stock without swivel-chair exports. Orders flow into invoices, shipments, and payments in one motion, while warehouse lots and stock movements keep fulfillment honest about what can actually ship today. Customers and partners stop emailing your team for status: the self-service portal takes B2B orders, shows tracking, and files warranty claims directly. When a record needs a field nobody planned for, an administrator adds the custom entity from the panel, no migration deploy, and shapes its lifecycle with per-tenant workflows and business rules. Every change lands as an auditable command with an author attached, so mistakes get undone, sensitive columns get encrypted per tenant, and several companies share one install without seeing each other's data. Storefronts and mobile apps plug into generated REST APIs with OpenAPI documentation, attachments turn searchable through OCR, and AI coding agents extend the system because the architecture conventions are written down for them. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

With over 11,500 GitHub stars, 20 contributors, and nine releases through version 1.4.0 in May 2026, Aureus ERP has established itself as the modern Laravel-powered alternative to legacy ERP systems like Odoo and ERPNext by packaging accounting, inventory, manufacturing, HR, sales, procurement, and project management into a modular MIT-licensed platform where you install only the plugins your business actually needs. Built on Laravel 13 with FilamentPHP 5 admin panels and TailwindCSS, each module installs via a single Artisan command that automatically resolves dependencies, runs migrations, seeds default data, and generates role-based permissions through Filament Shield integration. The Accounts module defines chart of accounts, journals, ledgers, currencies, and fiscal structures while the Accounting module handles journal entries, financial reports, period closing, and reconciliation workflows. Inventory management provides warehouse operations with stock tracking, transfers, and adjustments while Manufacturing handles bills of materials, manufacturing orders, work orders, and work center scheduling. The Sales module manages pipeline stages and opportunity tracking while Purchases handles procurement workflows and vendor management. HR capabilities span employee management, recruitment with applicant tracking, leave management through Timeoffs, and employee hour tracking via Timesheets. The Projects module provides planning and task management with the Maintenance module covering preventive and corrective equipment maintenance with calendar views. Docker deployment pulls a single image bundling PHP, MySQL, Apache, and Node.js for immediate browser access. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Ever Gauzy consolidates ERP invoicing, CRM sales pipelines, HRM employee records, applicant tracking, and project management into one full-stack TypeScript platform, eliminating the need to stitch together five separate SaaS subscriptions. Over 4,300 GitHub stars and 3,800+ releases back a CQRS architecture that separates command and query responsibilities across modules for invoices, expenses, payments, inventory, contacts, leads, deals, employee onboarding, candidate interviews, hiring workflows, sprints, goals, and KPI tracking. Time tracking captures hours via web timer, Electron desktop timer with activity monitoring and automatic screenshot capture, or browser extension, with timesheet submission and approval workflows supporting billable hour classification across Hubstaff and Upwork integrations. The multi-tenant architecture provides automatic tenant scoping with role-based permissions, while dual ORM support through TypeORM and MikroORM with Knex query builder ensures database flexibility across PostgreSQL, MySQL, and MariaDB. REST APIs documented with OpenAPI and Swagger expose every module for headless operation, complemented by an MCP server offering 323 tools for AI assistant integration. The Angular 19 dashboard provides dark, light, corporate, and material themes with i18n across 10 languages via Crowdin. Supports Docker, Kubernetes, Terraform, and Pulumi deployment with Redis caching and OpenSearch full-text indexing. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

jshERP lets a small or midsize business, from a shop to a wholesaler, run purchasing, stock, sales, and money from one place instead of scattered spreadsheets. A purchase requisition becomes a purchase order, then a receipt that raises stock. A sales order becomes an outbound delivery that lowers it, or a purchase order when more must be bought in. Retail sales, returns, and serial-number scanning run through the same stock. Products sit in a category tree up to three levels deep, with barcodes, images, multiple attributes, customer-specific prices, and a base unit plus up to three secondary units. Transfers move goods between warehouses, assembly and disassembly merge and split products, and shelf locations record where each item sits. Other receipts and issues cover opening stock, stocktake corrections, and scrapped goods, while moving-average cost keeps valuation current. Finance logs income, expenses, receipts, payments, transfers, and prepayments against settlement accounts, and customer and supplier reconciliation reports export to Excel. Reports track stock levels, low-stock alerts, in-out statistics, and purchase and sales summaries, and the home page totals yesterday's and retail sales. Roles limit access down to single menus and buttons and can mask prices. A tenant model runs several businesses on one installation, and the interface switches among 73 languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.

Every batch a craft business ships carries a recipe version, a cost, and a trail of ingredient lots, and Craftplan, an open-source ERP, keeps all three connected. Receiving stock against a purchase order records each supplier lot code and optional expiry date, and partial deliveries keep the order open. Customer orders appear on a delivery calendar and can generate invoices. Scheduled items wait on the production board as unbatched cards until Batch All creates one batch with a frozen copy of the recipe. Capacity warnings flag products over their daily limit, and a forecast highlights materials that will run short. Finishing a batch consumes ingredient lots earliest-expiry first, skips any lot on hold or rejected, and snapshots material, labor, and overhead costs. Recipes are versioned, so past costs never change. A blend made in-house can be stocked as its own material, with its actual yield, lot costs, and source lots intact. Allergens and nutrition facts roll up from each material through every recipe, and completed batches print A5 or compact labels with a scannable barcode. The Trace Center follows a supplier lot forward to every customer who received it, or a finished batch back to its sources. Recall mode can place the lot on hold, and the trace exports as CSV or prints for the recall file. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

InvenTree is an inventory management system for electronics manufacturers, makerspaces, and small-to-medium businesses. The hierarchical part categorization system organizes components into unlimited nested categories, while stock items tracked across cascading locations and sub-locations provide instant visibility into current inventory levels, with optional serial number tracking for individual item traceability and acceptance testing. Intelligent BOM management calculates sub-part requirements, validates availability against current stock, supports multi-format BOM upload including KiCad integration, and generates detailed bills of materials with full database enrichment. Build orders consume BOM-allocated stock to produce assembled parts with step-by-step work order tracking, while purchase orders manage supplier relationships with pricing history, lead times, and automatic stock receipt processing. The modern React frontend built with Mantine, TanStack Query, and Zustand provides responsive data tables, tree-select navigation, a preview drawer, and a snippet editor. The extensible plugin system supports 19 mixin types including BarcodeMixin for scanner integration, LabelPrintingMixin for Zebra and Brother printers, AppMixin for custom database tables, and ScheduleMixin for periodic background tasks. Companion mobile apps on Android and iOS provide barcode scanning and stock operations in the warehouse. Docker Compose deploys with PostgreSQL, MySQL, or MariaDB backends behind any reverse proxy. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Carbon delivers a unified manufacturing operating system that eliminates the integration tax of running separate ERP, MES, and QMS platforms. The Remix and TypeScript frontend paired with Supabase PostgreSQL backend provides full-stack type safety from database schema to React components, with real-time subscriptions pushing production floor updates to every connected client. The built-in MCP server exposes 1,374 operations across 15 modules through three discovery tools, enabling AI agents to interact with manufacturing data while respecting attribute-based access control. Nested bill of materials with unlimited depth supports complex assemblies, while the MRP engine calculates material requirements across multi-level structures with configurable lead times and safety stock. The configurator handles configure-to-order scenarios with rule-based variant generation. Full lot and serial traceability from receiving through shipping satisfies AS9100, ISO 13485, CFR Part 11, and ITAR compliance requirements. Custom fields extend any entity without schema modification, and the app framework lets integrators build domain-specific modules that plug into the core navigation, permissions, and data layer. Typed API clients for TypeScript, Python, C#, and cURL enable programmatic access to every manufacturing operation. Docker-based local development boots Postgres, Redis, Inngest, and the application stack with a single CLI command. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Bigcapital gives small and medium businesses a complete double-entry accounting, invoicing, and inventory management platform they can self-host for free, replacing the per-seat subscriptions of QuickBooks, Xero, and Wave. Every transaction records debits and credits across your chart of accounts, automatically generating balance sheets, profit and loss statements, trial balances, general ledger reports, journal entries, accounts receivable and payable summaries, cash flow analysis, inventory valuation, and inventory summary reports. Sales invoicing supports recurring schedules, customer payment tracking, estimate-to-invoice conversion, and configurable GST/VAT tax rates. Purchase invoicing handles vendor bills with expense categorization for payroll, rent, and operational costs. The inventory module tracks stock levels using FIFO and average cost methods, automatically adjusting quantities on every sale or purchase and providing reorder alerts. Multi-currency accounting converts transactions at real-time exchange rates and consolidates them under customer or vendor profiles with detailed currency reports. The platform deploys via Docker Compose with multi-tenant isolation giving each organization its own separate database, requiring as little as 2GB RAM for the complete production stack. A headless REST API with Postman collections lets developers embed the accounting engine into external applications for programmatic transaction management. Role-based permissions control access for team members and invited accountants across organizations. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Quote to cash in one web application - create quotes, convert them to invoices, record payments, track customers: iDURAR is an open-source ERP and CRM platform for small and medium-sized businesses. Built on the MERN stack (MongoDB, Express, React, Node.js) with Ant Design components and Redux state management, it presents a clean SaaS-style interface that needs little onboarding. Core modules cover invoice management with PDF generation and email delivery, payment recording against invoices, quote and proforma handling, customer records, and accounting views over the resulting data. Multi-currency support and localization make it usable for internationally operating teams. Because the whole stack is JavaScript with an API-first backend, extending it - custom fields, new modules, integrations - is approachable for any Node/React developer rather than requiring a specialist ERP skill set. Deployment is straightforward via Docker with a MongoDB instance. Licensed under AGPL-3.0 with free commercial use; a hosted enterprise version exists but the self-hosted edition is fully functional.

Define a DocType in Frappe and the framework automatically generates database tables, Python ORM classes, REST API endpoints, form views, list views, and role-based permission rules from that single schema definition. The meta-driven architecture stores schemas as database records, letting administrators add fields, reorder layouts, and modify validation rules through the browser-based Form Builder without redeployment. Server-side Python controllers handle business logic through hook-based lifecycle events while client-side JavaScript manages interactive form behavior, with WebSocket connections providing real-time updates across sessions. The built-in workflow engine defines document state machines with role-gated transitions, email notifications, and conditional action visibility. Pre-configured Desk views include list, form, report, tree, kanban, calendar, and dashboard layouts with drag-and-drop workspace customization. The report builder generates grid reports with configurable columns, filters, grouping, and chart visualizations from DocType data or custom SQL and Python scripts. Background job processing uses Redis queues for email delivery, data imports, and periodic tasks. Virtual DocTypes connect external databases to the framework's UI without data migration. Docker deployment via frappe_docker provides production-ready Compose configurations with MariaDB, Redis, Nginx, and worker containers. The foundation powering ERPNext, HRMS, CRM, and Helpdesk in production. Over 10,500 GitHub stars. MIT licensed.

With 3,300+ GitHub stars, 200+ releases, and v1.77 shipping in July 2026, Frappe CRM delivers enterprise CRM capabilities without per-seat licensing costs that plague Salesforce and HubSpot deployments. The Python backend running on Frappe Framework v15/v16 with MariaDB and Redis pairs with a Vue 3 frontend using Pinia state management, Vue Router, and the Frappe UI component library styled with Tailwind CSS v3. All-in-one lead and deal pages consolidate activities, comments, notes, tasks, call logs, and email history into a single scrollable view while the drag-and-drop Kanban board provides visual pipeline tracking across configurable stages. Built-in Twilio integration enables click-to-call with recording directly from deal pages, Exotel routes calls through agent mobile phones, and WhatsApp messaging connects via the Frappe WhatsApp module for conversational sales. A visual field layout editor lets non-technical users customize CRM forms, sidepanels, and grid views with real-time drag-and-drop without writing code. The Service Level Agreement engine tracks first-response and rolling-response times against configurable policies with automatic escalation. Meta integration captures leads from Facebook and Instagram ad campaigns directly into the pipeline. ERPNext connectivity extends CRM into invoicing, accounting, inventory, and purchasing with native data flow. Docker Compose deployment with a single command provisions a production-ready instance. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Accounted is an open-source accounting platform built for Swedish sole traders and limited companies that keeps double-entry bookkeeping, invoicing, payroll, and tax filings compliant with Swedish accounting law. Create and send customer invoices with mixed VAT rates, generate PDFs, and track payment status, while supplier invoices record input VAT and feed batch payment files your bank can upload. Connect the bank feed to reconcile transactions automatically, then watch matched entries clear in passes instead of hunting through statements line by line. VAT declarations map onto the SKV 4700 form with per-rate breakdowns, and tax reports export in the formats the tax agency expects for sole traders and companies. Run payroll with salary runs and payslips, file employer declarations, and sync the tax account so booked movements reconcile against the agency record. Every receipt and document lands in an archive with integrity checks and seven-year retention, and period locks with sequential voucher numbers keep the books audit-ready. An AI agent can categorize transactions, draft vouchers, and prepare declarations through the built-in agent tools, while every posting waits for your approval before it commits. Import or export the standard SIE format to move between Swedish accounting systems, and send or receive electronic invoices through the Peppol network. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Full double-entry accounting on your own server: Manager.io Server Edition runs the same engine as the free desktop edition as a web server, so unlimited users work in unlimited businesses concurrently, with all books on infrastructure you control. The module coverage is genuinely comprehensive - general ledger with a customizable chart of accounts, sales and purchase invoices, quotes and orders, bank and cash account reconciliation, inventory with stock tracking, fixed assets with depreciation, payroll, multi-currency with exchange gains and losses, tax codes for VAT and GST regimes, and the complete reporting stack: balance sheet, profit and loss, trial balance, aged receivables and payables, and cash flow statements. The interface is translated into more than seventy languages, reflecting a genuinely global user base. The licensing model is the refreshing part: a server license is a one-time perpetual purchase, not a subscription - twelve months of updates included, optional renewals after, no per-user tiers, no data limits, and you can downgrade to the free desktop edition anytime, so your books are never hostage. Businesses wanting collaborative accounting behind their own firewall, with data sovereignty and no monthly fees, get exactly that.

Akaunting is an online accounting software for small businesses and freelancers. The double-entry accounting engine provides a full Chart of Accounts, journal entries, and balance sheet reporting, eliminating the manual errors inherent in single-entry systems. Unlimited invoice creation with customizable templates, automatic payment reminders, and client portal access lets businesses present professional documents and accept payments through PayPal, Stripe, and other gateway integrations. Expense tracking captures operational costs with category-based organization, receipt scanning, and vendor bill management with overdue payment alerts. Bank Feeds auto-syncs transactions from connected bank accounts and matches them against invoices and bills for streamlined reconciliation. The dashboard displays receivables, payables, cash flow summaries, profit and loss charts, expenses by category, and account balances at a glance with configurable date ranges. Quotes and estimates convert directly into invoices upon client approval, while recurring invoices and bills automate periodic billing without manual intervention. The modular architecture built on Laravel with the Akaunting Module package enables an App Store where developers publish extensions for payroll, inventory, projects, and CRM functionality. Multi-company support manages separate books from a single installation with per-company user roles. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. BSL licensed.

OrderRestro runs an entire restaurant from one server on the premises: tills take orders, the kitchen watches tickets arrive, tables fill and clear, and the books close at night, all without a subscription, and it keeps working when the internet drops. Billing covers dine-in and takeaway with merged bills, discounts, gift cards, tips, and refunds, and it taxes under India GST, US sales tax, EU VAT, or Spanish IVA, with UPI QR payments confirmed by an audible alert. A visual floor plan follows every table while reservations and a waitlist manage the door, and guests scan a table QR code to order, add modifiers, call the waiter, or request the bill. Kitchen tickets route to the right station on the display system with preparation tracking, and the menu supports modifier groups, combos, seasonal menus, and scheduled availability. Ingredient inventory with recipe costing, purchase orders, goods receiving, and waste tracking keeps food costs honest, and accounting closes cash nightly with variance checks, profit and loss, a balance sheet, and bank reconciliation. Staff clock in and out, shifts are scheduled with clash checks, payroll comes from clocked hours, and loyalty points, memberships, coupons, and happy-hour campaigns keep regulars returning. Delivery runs on zones with fees, minimums, and driver assignment, chains switch branches and transfer stock between them, and eighteen reports export to print, CSV, Excel, or PDF. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Admins, supervisors, and operators each get their own screens in OpenMES, a free self-hosted manufacturing execution system for small factories. Drag work orders across weekly, daily, hourly, and monthly planner views, and any order that stock cannot cover gets flagged. Automatic scheduling drafts a feasible plan from shift calendars, maintenance, and material shortages, and nothing changes until a supervisor applies it, with undo. Work orders carry partial batches, reusable process templates, and priority scores built from customer tier, planned quantity, and hours until due, and CSV or Excel imports bulk-load orders, materials, and recipes. Operators work from touch-optimized tablet queues, where one tap starts, completes, or reports an issue, even offline, and a critical issue halts production automatically. When a machine stops, MQTT, Modbus TCP, or OPC UA signals record the downtime automatically, and the same signals drive good and reject counters and OEE. At goods-in, an inbound inspection records pass or fail criteria and a disposition such as accept, rework, scrap, or quarantine. Material lots track received and available quantities with hold and release status, and the production cost report splits each finished order into material, labor, and additional costs, with CSV export. Supervisors follow the shift on a live monitor. Webhooks, a REST API, and hook-based modules connect OpenMES to ERP systems and custom code. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.