Open Source App Cloud Marketplace

With 3,900 GitHub stars, 140 contributors, and 380 releases since its 2022 launch, Grafana OnCall delivers developer-friendly incident response that routes alerts from any monitoring system to the right engineer at the right time through the right channel. The platform accepts alerts via unique API URLs from Alertmanager, Grafana Alerting, Zabbix, Datadog, Pagerduty-compatible sources, Jira, inbound email, and generic HTTP webhooks, then applies routing templates to direct each alert to the appropriate escalation chain. Escalation chains define notification sequences — notify the primary on-call via Slack, wait 5 minutes, escalate to SMS and phone, wait 10 minutes, page the secondary on-call and notify the engineering manager — continuing until acknowledgment or resolution. On-call schedules support multi-layer rotations with overrides, shift swaps, and timezone-aware handoffs rendered directly inside Grafana dashboards. ChatOps integration publishes alert groups to Slack channels and Telegram groups with interactive buttons for acknowledge, resolve, and silence actions. Template engines based on Jinja2 control alert grouping, appearance rendering, and behavioral automation. The REST API enables programmatic management of integrations, schedules, and escalation policies. Deploy via Docker Compose with PostgreSQL, Redis, and Celery workers alongside your existing Grafana instance. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GNU AGPL v3 licensed.

Writing docs should feel like editing a modern document, not wrangling Markdown files - CodeX Docs delivers that on Editor.js, the block-styled editor its CodeX team builds and thousands of products use. Content is composed from clean blocks (headings, lists, code, images, embeds) with a UI that reads well on both desktop and mobile, and pages render statically with human-readable, SEO-friendly URLs. Structure is free-form: pages nest to any depth, so a flat FAQ and a deep product manual coexist in one instance, and the UI tunes to fit - collapse sections, hide the sidebar. The operational footprint is deliberately tiny. No database is required: the default driver persists to a local folder, with MongoDB available when you want it, and the whole app configures through one YAML file (overridable with APP_CONFIG_ environment variables) covering title, start page, auth password, and JWT secret. Editing mode sits behind password authentication. Thoughtful extras are wired in: readers can report misprints straight to your Telegram or Slack, Hawk error tracking catches frontend and backend exceptions, and Yandex Metrica analytics is a one-line config. A ready-made Helm chart covers Kubernetes. Written in TypeScript.

Infinite OS packs a complete hosting environment into a single Docker container, and you decide what it hosts after it starts. From the dashboard you add the runtimes, databases, domains, and applications that a normal image would have forced you to choose at build time. Open the Marketplace and WordPress, n8n, or dozens of other applications install in a few clicks, dependencies and services included, with a hostname and route created automatically. PHP, Node.js, Bun, Python, Ruby, and Java runtimes install on demand beside databases and workers, so one project runs its whole stack inside one environment. Public domains get free TLS certificates automatically, and changing the primary domain once updates the web server, PHP, and database records to match. The built-in web terminal needs no SSH setup, and a coding agent such as OpenCode can work there with the project files, runtimes, and databases within reach. A file manager, cron scheduler, PHP version switching, and per-route rate, bandwidth, and connection limits cover the daily work of running sites from the browser. Team accounts give each person their own login, and nearly every dashboard action has a matching CLI command and REST API call for scripting. Each project gets its own container with its own filesystem and services, so unrelated sites stay isolated while several lightweight environments share one machine. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. EPL 2.0 licensed.

Netra watches your network from the side, plugged into a switch mirror port, and turns everything it sees into a live picture of your traffic without ever sitting in the forwarding path. A single binary loads its eBPF collectors in the kernel, so aggregation happens before packets reach user space and multi-gigabit mirror feeds stay observable instead of dropping samples. The dashboard opens on totals, protocol share, and traffic trends, then lets you drill into flows by address, port, domain, or service, check which countries your traffic talks to on a world map, and read the internal topology as a live graph. Domains surface passively from TLS handshakes, public addresses are enriched with country and organization data, and heuristic detectors flag scanning, flooding, and single-host surges, pushing alerts to your team chat with an optional AI-written explanation. You can ask the built-in assistant questions about real recorded history, connect external MCP servers so it can call your own tools while it answers, and stream flows onward to Kafka for other consumers. History rolls into compressed columnar files on a schedule and stays queryable for a month by default. 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.

To design relational database schemas visually and generate production-ready SQL migrations without writing boilerplate DDL by hand, developers use StackRender, an interactive browser-based schema modeling studio. Users can start from a blank drag-and-drop Entity Relationship Diagram canvas or import existing SQL DDL scripts directly from PostgreSQL, MySQL, MariaDB, SQLite, Oracle, and Microsoft SQL Server databases. Each table node provides granular control over column data types, lengths, precision, character sets, collations, nullability, uniqueness, primary keys, composite indexes, and custom PostgreSQL enum types. When connecting tables across one-to-one, one-to-many, and many-to-many relationships, the schema analyzer checks for circular foreign key dependencies and suggests performance indexes on frequently joined columns. As a schema evolves over time, the visual state-diff engine records every structural modification and generates paired UP forward-migration and DOWN rollback scripts, accurately translating table and column renames into non-destructive ALTER statements rather than dropping and recreating data. 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.

Your entire mail system can live in one self-hosted suite with OpenMail, from SMTP, IMAP, and POP3 delivery to three-pane webmail and the admin console that runs it. Standard clients such as Thunderbird, Apple Mail, and phone apps connect over SMTP ports 25, 587, and 465, IMAP ports 143 and 993, and POP3 ports 110 and 995, while people use the three-pane webmail with folder tree, conversation list, and reading pane at port 3000. You read, write, reply, forward, batch-organize, drag messages between folders, filter stars, search sender, subject, and body text, and follow conversations threaded automatically by their References headers. The rich-text composer autocompletes recipients, accepts dragged attachments and pasted screenshots, saves drafts every 12 seconds, sends on a schedule, and inserts reusable templates imported from HTML or generated with AI. Any OpenAI-compatible endpoint can draft replies, translate mail into twelve languages, and summarize messages, with provider keys encrypted on your server. Administrators get real-time mail statistics with 14-day send and receive trends, user quotas and bans, multi-domain aliases and catch-all addresses, outgoing queue visibility, and audit logs. Adding a domain generates DKIM keys and copy-ready SPF, DKIM, and DMARC DNS records with one-click checks, while rule-based spam scoring, TOTP two-factor authentication, and role-based permissions protect accounts in ten interface languages including right-to-left Arabic and Urdu. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Monitoring and safeguarding Docker infrastructure without heavy enterprise software overhead is the primary mission of Statainer, an open-source management control center for container hosts. System operators inspect live CPU loads, memory consumption, network throughput, and disk I/O metrics across individual containers or comparative top-ranking charts. The interface groups containers by Compose projects, enabling administrators to start, stop, or restart entire application stacks and inspect real-time log streams without opening SSH sessions. The built-in Update Manager detects available image tags, executes single-click container updates, and maintains persistent deployment history with automated rollback capabilities for failed recreations. Custom alert configurations trigger instant notifications to Telegram, Discord, Slack, Pushover, or generic webhook endpoints whenever resource thresholds are breached or container health states change. Developers can provision scoped API keys with token authentication to automate container state transitions and export performance telemetry into custom monitoring workflows. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Traditional database management tools like pgAdmin and phpMyAdmin were built for DBAs, not for the rest of the team that just needs to look up a record or run a quick query. db-ui strips away the complexity and gives you a clean, modern interface that anyone can use. Browse tables in a paginated grid view with inline editing, filtering, and sorting built right into the column headers. The sidebar lists every table and view across all schemas with fuzzy search (Cmd+K to focus) that filters results as you type. Click any table to see its data, or switch to the schema introspection view to visualize columns, types, constraints, and relationships without writing a single query. The SQL editor provides syntax highlighting, result visualization in tabular format, and one-click CSV export for downstream analysis. For questions about your data model, the integrated AI chat assistant has full access to your database schema and can help you understand table relationships, write complex queries, suggest indexes, and provide optimization recommendations with streaming responses. Connect to PostgreSQL, MySQL, or Microsoft SQL Server through environment variables and deploy the whole application as a single Docker container. On RepoCloud, deploy db-ui on a dedicated VPS with root SSH access and direct connectivity to your database servers under the MIT license.

Managing multi-server container fleets often deteriorates into fragmented SSH sessions, mismatched compose files, and conflicting port allocations. Composr consolidates multiple Docker host daemons into a unified web dashboard that controls running containers, stack definitions, and system metrics from a single interface. Operators can connect remote Docker daemons through encrypted TCP sockets, inspect container health, and stream live execution logs with sub-second responsiveness. A built-in project creation wizard guides administrators through drafting new Compose topologies across local directories or remote server nodes. In-browser CodeMirror editors deliver live syntax highlighting for YAML files, configuration dotfiles, and reverse proxy definitions without detaching containers from disk. The platform tracks service properties directly, letting you toggle Compose profiles, relocate services between YAML manifests with pre-flight risk checks, and detect target port collisions before redeployment. Integrated backup managers bundle container metadata, compose files, and environment definitions into downloadable archive packages for automated disaster recovery. System operators can open interactive browser terminals into any active container, execute batch maintenance tasks, and configure scheduled image update checks. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

PRISM consolidates passive reconnaissance, credential leak detection, and network asset mapping into a unified operational dashboard to replace fragmented command-line security tools. Analysts can launch simultaneous multi-source investigations against domains, internet protocol addresses, email mailboxes, phone numbers, and online handles to uncover domain registrations, open network ports, cryptographic certificates, and historical web archives. The platform interrogates threat feeds and leak repositories to expose credential leaks, dark web mirrors, and email routing anomalies with automated SMTP mailbox verification. Cross-platform identity engines crawl thousands of social networks and public registries to correlate aliases, discover leaked commit identities, and trace digital footprints across the web. Discovered assets render into interactive entity relationship graphs alongside geographic internet protocol maps to help investigators visualize infrastructure clusters and ownership links. An automated operational security calculator evaluates exposure vulnerabilities across identity, web, and infrastructure vectors, producing an aggregated risk score with granular hardening recommendations. Scheduled watchlists continually monitor target infrastructure, dispatching webhook notifications to chat channels whenever new subdomains, ports, or credential leaks appear. Investigators can export comprehensive audit dossiers as self-contained HTML files, styled PDF documents, or structured spreadsheets. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Technical teams frequently struggle to keep software architecture diagrams synchronized with evolving codebases and documentation repositories. Atlantis Diagrams delivers a unified self-hosted workspace that couples code-driven Mermaid.js diagramming with structured Markdown knowledge bases in a responsive web interface. Engineers can compose flowcharts, sequence diagrams, state machines, entity-relationship models, and Gantt schedules using split-view CodeMirror editors with real-time SVG rendering. An integrated version history tracker automatically captures revision checkpoints across the last 15 document states, letting authors compare modifications and restore previous iterations without data loss. The linked notes environment supports rich Markdown editing, LaTeX mathematical formulas, interactive task checklists, tag indexing, and full-text keyword searches across personal documentation libraries. Canvas controls allow users to pan, zoom, inspect individual nodes, and export finalized graphics directly into vector SVG, high-resolution PNG, or printable PDF documents. Storage engines adapt to deployment scale, running on zero-configuration SQLite databases out of the box with optional PostgreSQL, MySQL, and Redis caching layers for high-concurrency environments. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

The social preview cards shown when links hit Twitter, LinkedIn, Slack, or Discord, generated on the fly: Oxigen is a small Go service for dynamic Open Graph images, no designer required per page. Instead of exporting static images per page, you compose a card once and drive it with parameters: title, author, website, logo, background image, and background dimming all arrive as URL query arguments, so your og:image meta tag simply points at the Oxigen endpoint with the page's own values substituted in. Every blog post, product page, and doc gets a branded, correctly sized preview generated on the fly. A built-in web UI covers interactive composition - tweak the text and imagery, watch the preview update, copy the resulting URL - while the same rendering path serves programmatic API use from static site generators, CMS templates, or build pipelines. Rendering is pure Go using the gg 2D graphics library, freetype fonts, and the imaging package, built on the kyoto framework by that project's author. Deployment is one stateless container on port 80 with no database and no external dependencies, so instances scale and restart freely.

"Get to your most important links, FAST" - Hiccup's README states its whole mission in that one line, and the static start page delivers it. It is a client-side React single-page app - no backend, no database, no accounts - driven entirely by a config.json that defines featured link cards, categorized sections, and search providers. The search bar is the power feature: it queries your own links by name, URL, and tag while simultaneously offering external providers like Google, DuckDuckGo, and Amazon (plus custom URL-template providers you define), with arrow-key navigation and Enter to launch, so muscle memory replaces mousing. Editing happens in the browser - drag and drop links and background images, tweak cards in edit mode - with changes persisting to localStorage; a built-in config manager exports the JSON for hosting, and remote profile loading pulls a shared config across every browser and device you use. Multiple profiles keep home-server, work, and dev-tool link sets separate. PWA support installs it on a phone home screen, caching strategies keep it fast offline, read-only mode suits kiosk displays, and Cmd/Ctrl+/ reveals the full hotkey reference. Serve it from any static host and point your new tab at it.

Moneat is the open-source observability platform that unifies error tracking, session replay, performance monitoring, logging, uptime checks, synthetics, product analytics, and AI observability into a single self-hosted application — replacing Sentry, Datadog, and Statuspage with one deployment. The Sentry SDK compatibility layer accepts data from @sentry/browser, @sentry/node, @sentry/react, @sentry/nextjs, sentry-sdk for Python, sentry-kotlin, sentry-java, sentry-android, sentry-cocoa, sentry-go, sentry-ruby, and Sentry.NET by updating one DSN endpoint. Datadog Agent compatibility redirects existing fleets by setting dd_url, and native OpenTelemetry OTLP ingestion accepts logs, traces, and metrics from any exporter or Collector. Error monitoring groups exceptions with smart deduplication, session replay records DOM-based user interactions linked to errors, distributed tracing visualizes transaction and span breakdowns with live service maps, and continuous profiling renders flamegraphs in pprof, JFR, and Sentry formats. Uptime monitoring runs HTTP, TCP, and ping checks with public status pages, while synthetics executes API tests, multi-step workflows, SSL checks, and DNS probes. Custom dashboards support drag-and-drop widgets with Grafana import, product analytics provides funnels and retention cohorts, release tracking surfaces crash-free rates with source map upload, and AI observability traces LLM calls end to end. Built on Kotlin and Java with ClickHouse for analytical storage, PostgreSQL for relational data, and Redis for caching, deployment uses Docker Compose with an interactive installer automating secrets and service orchestration. 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.

When a service you run goes down at 3 a.m., Upstat is the watcher that notices first and writes it down. Add any HTTP or HTTPS endpoint and it checks in every sixty seconds, building a living record of uptime, response latency, and ping times that you can read at a glance from status and latency charts. Certificate details sit alongside each monitor, so an expiring TLS certificate stops being a surprise outage waiting for a date. Each monitor can appear on public status pages, and you can run several of them, mapping different pages to different domains so customers, clients, or separate products each get their own honest view of what is up. When a check fails, a Discord notification heads to your channel with the news, and the dashboard keeps the incident in its history instead of letting it vanish into a chat scrollback. Install it as a progressive web app, keep its data in SQLite for a one-file setup or PostgreSQL when the deployment grows, and the whole thing stays on infrastructure you control. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Mastodon serves single-user and small-community instances poorly; GoToSocial, an ActivityPub server written in Go, was built precisely for them. Where Mastodon demands Ruby, PostgreSQL, Redis, and Sidekiq, GoToSocial is one binary using roughly 250-350 MiB of RAM with SQLite as the default database (PostgreSQL optional) - it runs comfortably on a $5 VPS or a repurposed laptop. The deliberate design choice is having no built-in web client: the server exposes profile pages, a settings panel, and a faithful implementation of the Mastodon API, and you post through the client app you already like - Tusky on Android, Feditext on iOS, Pinafore or Phanpy in the browser. Federation is the point: your instance follows, boosts, and replies across Mastodon, Misskey, Pixelfed, and the rest of the Fediverse, with your identity anchored to your own domain. Safety is a stated focus, with granular per-post visibility and interaction controls, content warnings, custom emoji, hashtag following, domain allow/blocklists, and OIDC login support. Built-in Let's Encrypt provisioning simplifies the mandatory TLS. AGPL-3.0 licensed and in active beta, federating cleanly with the ecosystem's major servers.

Real-time collaborative Markdown behind your own firewall: HedgeDoc (formerly CodiMD, descended from HackMD's open-source edition) keeps team notes on team infrastructure. Share a note's URL and collaborators are editing together instantly - live cursors, changes appearing keystroke by keystroke - in a three-mode interface that toggles between raw Markdown, rendered preview, and side-by-side split. The Markdown dialect is extended where engineers need it: Mermaid, Graphviz, and Vega-Lite diagrams, MathJax for equations, syntax-highlighted code blocks, embedded content, and a presentation mode that turns a note into reveal.js slides with a single YAML header. A dropdown permission system controls each note - freely editable, limited to signed-in users, or locked read-only - and published notes become clean read-only pages for wider distribution. Revisions track every change with the ability to revert to any earlier version. The AGPL-3.0 codebase is light enough to run on a Raspberry Pi and deploys via Docker with PostgreSQL, MySQL, or SQLite. Authentication covers LDAP, SAML, OAuth2, and email. It deliberately stays a focused document editor - no page trees or kanban - and does that one job with excellent keyboard-first ergonomics for meeting notes, RFCs, runbooks, and shared scratchpads.

Upload a file, get a unique download link and a separate delete link - Jirafeau has done exactly this one thing since 2008. It is plain PHP with no database, no mail server, no JavaScript framework, and no external dependencies - files and metadata live on the filesystem, which is why it runs on nearly anything and why it has outlasted most of its imitators. Uploads use the HTML5 file API, so PHP's post_max_size ceiling does not constrain file size, with live progress showing speed, percentage, and time remaining. Every upload takes options: expiration from one minute to a year to unlimited, self-destruct after first download, and password protection with configurable policy - passwords can be optional, required, or server-generated with complexity rules. Server-side encryption (modern builds use XChaCha20-Poly1305) stores files encrypted at rest with the decrypt key embedded only in the download URL, never on the server, so a compromised host cannot read the contents. Unencrypted deployments get file-level deduplication - identical files stored once with multiple links. Upload access can be gated by password lists or IP allowlists, a small admin panel manages stored files, and a CLI cleanup script handles expired files via cron. Recipients can preview supported files in-browser.