PsiTransfer
Upload files, get a share link, let it expire: PsiTransfer is a self-hosted WeTransfer with no accounts, no logins, and no third-party cloud with size caps and metadata harvesting. The engineering focus is large files over imperfect networks. Uploads use the tus.io resumable protocol, so a dropped connection on a multi-gigabyte video resumes exactly where it stopped once you're back online; downloads support HTTP range headers for the same resilience, and everything streams, so file size is bounded by your disk rather than memory. Files organize into upload buckets with retention you control: expire after a set time (up to weeks) or after a one-time download, with automatic cleanup when links lapse. Recipients need nothing installed - they open the link, preview files in modal views, and grab everything as a zip or tar.gz archive with one click. Buckets can be password-protected (AES-encrypted download lists), and security-through-obscurity is done properly: bucket URLs use hashed UUID tokens and stored filenames are replaced with UUIDs. An optional admin page (enabled by setting an admin password) lists bucket information and storage. The Vue.js frontend ships under 100 KB gzipped and is fully responsive. Honest caveat from the author: no end-to-end payload encryption yet. BSD-licensed, Docker-ready.
Octobox
What Gmail did for email, Octobox does for GitHub notifications: an ephemeral, unmanageable stream becomes an inbox you can actually triage. GitHub marks notifications read the moment you glance at them and lets old ones vanish days later; heavy maintainers end up building elaborate Gmail filter systems just to cope. Octobox - a Ruby on Rails app over PostgreSQL - syncs your notifications into a persistent inbox with an explicit archived state: mark a thread done, and if the issue or PR sees new activity, it pops back automatically, so nothing silently falls through. Triage is keyboard-driven with Gmail-style shortcuts (j/k to navigate, e to archive, m to mute, s to star), and multi-select clears noisy repositories in bulk. Filtering is where it earns its keep: slice by repository, organization, type, action, state, reason, CI status, labels, author, assignee, or bot origin, combine prefix search filters, and pin favorite searches to the sidebar. The optional GitHub App enriches entries with live PR/CI status and labels so you can decide without clicking through. Auto-archive rules clear merged PRs and closed issues; muting and snoozing silence the rest. A REST API supports integrations. Self-hosting keeps your notification metadata - a map of everything you work on - on your own server.
Motor Admin
Stop building internal tools and ship your actual product - Motor Admin exists for exactly that. Point this Ruby/Vue application at a PostgreSQL, MySQL, MariaDB, or SQL Server database and it generates a complete CRUD admin panel from your schema in under a minute - search, filters, create, update, delete, all through a polished UI, with every customization done through in-app settings rather than a DSL or boilerplate code. What elevates it beyond CRUD generators is the business-intelligence half: write SQL queries (with variables) and render results as tables, numbers, line/bar/ pie charts, funnels, or markdown; organize reports into shared dashboards; and attach queries and dashboards directly to resource pages as tabs, so an order record shows its revenue history in place. Operations beyond CRUD are covered by custom actions and a WYSIWYG forms builder that posts to your existing REST or GraphQL APIs - send a refund, trigger an email, whatever your backend exposes. Email alerts deliver scheduled reports, Slack sends personalized report alerts, and intelligence search spans all resources. Governance is included: role-based permissions with row- and column-level control (CanCanCan), an audit log of admin activity, multiple database connections, and configuration sync between staging and production. Mobile-optimized, AGPL-licensed, also available as a Rails engine.
Wakapi
Its author, a student and WakaTime fan, didn't want to pay $9/month for data about his own keystrokes - so Wakapi was born, a self-hosted, WakaTime-compatible backend for coding statistics. The compatibility is the killer design decision: the official WakaTime plugins for VS Code, JetBrains IDEs, Vim, and dozens of other editors work unmodified - just point the plugin's API URL at your Wakapi instance with your personal key, and heartbeats flow to your server instead of a third party's. Duration inference matches WakaTime's own algorithm, with a configurable timeout (10 minutes by default). From that stream Wakapi builds statistics and plots across projects, languages, editors, hosts, and operating systems, plus the fun extras: public leaderboards (optionally login-gated, with configurable aggregation windows), badges for GitHub readmes, and weekly email reports. A REST API serves your data programmatically, Prometheus export feeds your existing Grafana, and a WakaTime relay mode can mirror heartbeats to both services during migration - with one-click import of historical WakaTime data. Written in Go, it is lightning fast and light enough for the smallest instance, storing to SQLite, PostgreSQL, or MySQL, with configurable data retention for GDPR peace of mind. Deliberately smaller than WakaTime, deliberately yours.
ChatChat
One clean interface in front of Anthropic, OpenAI, Google Gemini, Cohere, and more: Chat Chat is a Next.js front door to the major AI providers, ending the juggling of separate subscriptions, tabs, and UIs per model. Bring your own API keys, pick a provider and model per conversation, and switch between them as the task demands: Claude for long-form reasoning, GPT for code, Gemini for multimodal work - the interface stays identical. Beyond configured presets, custom providers plug in with their own API endpoints and keys, which covers OpenAI-compatible gateways and local inference servers. The design splits into two dedicated modes: a chat interface for conversational work with customizable system prompts, and a search interface that pairs AI processing with query handling for research-style questions. The stack is modern and hackable - Next.js 14, Tailwind CSS, shadcn/ui on Radix primitives, Jotai for state - with full internationalization including English, Chinese, and Japanese. Self-hosting means your conversation history and API keys live on your instance rather than a third-party wrapper service, and pay-per-token API pricing typically beats stacking multiple monthly chat subscriptions. AGPL-licensed and deliberately simple to deploy: one container, environment variables for keys, done.
OpenHAB
Over 400 technologies and thousands of smart devices from any manufacturer, unified under one roof: openHAB is the vendor-neutral home automation platform with a pluggable binding architecture. Each binding translates a device or service into openHAB's clean abstraction: Things expose Channels, Channels link to Items, and Items feed a rules engine that runs your home. That engine meets you at your skill level: Blockly gives non-programmers drag-and-drop visual logic, JS Scripting (GraalJS with the openhab-js library) is the modern text-based standard, the classic Rules DSL remains supported, and JSR223 opens the door to Python, Ruby, and Groovy. Time- and event-based triggers, scripts, notifications, and voice control compose into automations of any complexity, and users report decade-old rule sets still running rock solid. The Main UI handles configuration, semantic modeling, and now built-in charting - no external Grafana required. Built in Java on Apache Karaf's OSGi runtime and stewarded by the non-profit openHAB Foundation, it requires no cloud to function: everything runs locally, talking directly to your devices. Optional connectors bridge to Alexa, Google Assistant, and HomeKit, with iOS, Android, and web apps for control from anywhere.
EasyAppointments
Service businesses get a booking page without per-booking commissions or monthly SaaS fees from Easy!Appointments, the self-hosted appointment scheduler. Customers pick a service, provider, and open time slot from a clean web form; the system enforces working plans, breaks, and booking rules you define per provider, then confirms by email to both sides. The structure fits real service organizations: multiple providers with individual schedules, multiple service types with their own durations and prices, and admin/secretary roles for front-desk management. Two-way Google Calendar synchronization keeps each provider's external calendar authoritative - book in Easy!Appointments and it appears in Google Calendar, block time in Google and the slot disappears from the booking form. Version 1.6 adds SMS notifications and payment support, and a REST API opens the scheduling data to custom integrations. Built on PHP (CodeIgniter) with MySQL, it installs in a single folder and can share a database with your existing site; a WordPress plugin embeds the booking form directly in pages or posts. The interface ships in dozens of languages with time-zone handling throughout. GPL-3.0 licensed and free for commercial use - a helpdesk, clinic, salon, or consultancy runs its whole booking workflow on its own server.
Coral
Comment sections at the Washington Post, the Wall Street Journal, and newsrooms across 30 countries run on Coral (also known as Talk) - the platform built by journalists' technologists, started under the Mozilla Foundation and now stewarded by Vox Media as an Apache-2.0 project serving 23 languages. Its founding premise is that online comments are broken and moderation is the fix. Moderators get a full queue system - reported comments, system-held pending comments, and configurable pre-moderation - backed by AI toxicity scoring that warns commenters before posting and holds high-scoring comments for review, Akismet spam detection, banned and suspect word lists, and automatic repeat-offender handling that pre-moderates users whose rejection rate crosses a threshold. Readers get features designed for healthier conversation: journalist badges in threads, muting of annoying voices, notifications, instant new-comment alerts, and timeouts rather than just bans. For publishers the economics are the point - no ads, no trackers, no hidden pixels anywhere in the code, full ownership of audience data, and GDPR compliance beyond requirements. Integration is one embedded script; SSO connects existing registration, and a GraphQL API supports customization and extension.
Chief-Onboarding
New hires fail from information overload and IT bottlenecks, not lack of goodwill - the observation behind ChiefOnboarding, a free, open-source employee onboarding platform (Django, Celery, PostgreSQL, Redis). Its answer is sequences - drag-and-drop timelines that drip-feed to-do items, resources, courses, forms, and badges to each new hire, triggered by dates or by completing a previous item, so nobody faces everything at once. Onboarding starts before day one: preboarding pages welcome hires early, and colleagues can leave personal messages that appear there. The account provisioning module creates the new hire's Slack, Google, Asana, and other accounts automatically on the scheduled day via a library of integrations plus custom webhooks - the IT ticket queue never gets involved. Everything works through two equivalent interfaces: a full web dashboard and a Slack bot, either usable standalone. Slack can even auto-create new hire accounts when someone joins the workspace and assign default sequences with zero manual action. Colleague tasks with comments and collaboration, a searchable people directory, scheduled introductions, and per-hire timezone awareness (no 3 a.m. notifications) round it out. No trackers, no phoning home - third-party credentials sit in encrypted fields on your server.
Zipline
ShareX and file uploads, next generation: Zipline is a Node.js/React/PostgreSQL server that turns screenshot sharing and file hosting into something you run yourself instead of renting from Imgur or a paid image host. The core workflow is built around ShareX: generate an .sxcu config from your account settings, import it, and every screenshot or clipboard capture uploads to your domain with a short link copied automatically. Uploads accept any file type, organized with folders and tags, with token-protected uploading, optional password protection, view-limited auto-deletion, image compression, metadata stripping, automatic video thumbnails, and chunked/partial uploads for large files. File URLs come in configurable formats - UUIDs, dates, random alphanumerics, original names, even zero-width spaces. A built-in URL shortener adds vanity slugs, passwords, view caps, and custom domains. Discord embeds are first-class: customize OG metadata titles, descriptions, and colors so links unfurl exactly how you want, and fire fully customizable Discord or HTTP webhooks on each upload. Authentication is serious: OAuth2 (Discord, GitHub, Google, OIDC), TOTP two-factor, and passkeys, with invite-based registration and per-user quotas for shared instances. Storage targets local disk or any S3-compatible backend, a full REST API automates everything, and custom themes plus a PWA round out the experience.
Tolgee
Hold Alt/Option, click any string in your running app, and edit the translation in place: Tolgee is an open-source localization platform built the way developers wish translation worked - changes save straight to the platform with no hunting through JSON or PO files. In-context editing works even in production via the Tolgee Tools browser extension, which injects credentials without touching source code, so a client or colleague with zero coding skills can translate the product inside the product. The SDKs (React, Angular, Vue, Svelte, plus iOS and Android) extract context from each UI element and capture one-click screenshots, giving both human translators and machines the surrounding meaning that raw string files lose. Autonomous translation uses that context: new keys are instantly filled from translation memory or machine translation (DeepL, Google Translate, AWS Translate), with optional human review afterward - shipping no longer waits on a translation agency. A CLI handles import/export, a REST API covers automation, a Figma plugin bridges design, and an MCP server lets AI coding assistants search keys, create translations, and trigger machine translation without leaving the editor. Self-hosting this Crowdin/Phrase/Lokalise alternative keeps every string, screenshot, and API key on your infrastructure.
Faved
Large link collections stay fast and organized in Faved, a private, self-hosted bookmark manager built for exactly that job. Its core is a nested tagging system that outgrows flat folders: place Go and Python under Programming Languages, color-code tags, add descriptions, pin frequent ones to the top of the sidebar, and optionally roll up child-tag items into parent views. Saving is frictionless - a lightweight bookmarklet works in any desktop or mobile browser without extensions, and Apple devices can send links through the native Share menu. Faved fetches titles, descriptions, and preview images automatically, keeps that metadata fresh over time, and flags duplicates as you save. Instant as-you-type search, flexible sorting, and bulk actions (retag, delete, refetch) keep collections of any size manageable, while customizable layouts - card, list, or table - plus a system-synced dark mode adapt the interface to your workflow. Migration is first-class: import from Chrome, Safari, Firefox, or Edge with folder structure preserved, or move from Pocket and Raindrop.io keeping tags and collections. The stack is deliberately light - PHP 8 with SQLite behind a React/Tailwind frontend - deploying via Docker with no external dependencies. All data stays local: no ads, no tracking, and no risk of your library vanishing with a discontinued service.
Shiori
Most web links eventually break - the sobering statistic Shiori, a bookmark manager with archiving by default, is built on. Its answer is archiving by default - where possible, every bookmark you save gets a clean, readable offline copy parsed from the page, ads and navigation stripped, so the article survives even after the original URL dies. Conceived as a simple Pocket clone and written in Go, the entire server is a single binary using roughly 25-30 MB of RAM with SQLite out of the box (Postgres and MySQL supported) - genuinely the lightest archiving bookmark manager you can run. Saving is one click through the Firefox and Chrome extensions, and finding things again is where Shiori quietly outperforms its size: full-text search covers the archived page content, not just titles and tags, so you can find that article by a phrase you remember from paragraph six. Reader mode presents the cleaned text; archive mode shows the preserved page. It's dual-interface by design - a pretty web UI (installable as a PWA on mobile) and a complete CLI for terminal devotees - plus a REST API for scripting. Pocket imports work natively, and Netscape HTML handles browser imports and exports. Multi-user support included. MIT-licensed.
MediKeep
Your medical history, fragmented across a dozen patient portals, in one place on your server: MediKeep (formerly Personal Medical Records Keeper) is a self-hosted health record system. Built with a React frontend and FastAPI backend over PostgreSQL, it organizes 14 categories of medical data - medications with dosages and schedules, conditions, procedures, allergies, immunizations, symptoms, injuries, doctor visits and encounters, treatments, lab results, and even medical equipment with service dates and supplier info. Treatment management is genuinely sophisticated: an advanced mode links treatments to their medications with per-medication overrides for prescriber, pharmacy, and effective dates, and reverse lookup shows which treatments use a given medication. A dashboard summarizes records and recent activity, file uploads attach documents to records, and tagging works across categories. When a new specialist asks for your history, the report builder assembles custom reports by category and exports to PDF, JSON, or CSV - a curated, portable summary instead of a folder of photocopies. Authentication supports Google and GitHub SSO with OIDC providers like Keycloak and Authelia expected to work, and the built-in backup system protects the archive. Health data is exactly what should never live in someone else's cloud.
SQL Chat
Describe what you want in plain language and get real SQL against your real schema: SQL Chat is an open-source, chat-based SQL client from the Bytebase team. Instead of writing queries in a traditional editor, you connect a database and describe what you want in plain language; the AI reads your schema automatically, generates SQL that references real table and column names, executes it, and returns tabular results in the conversation. Follow-up messages refine the query, so exploration becomes a dialogue - narrow a result set, add a join, change an aggregation - without retyping statements. It supports MySQL, PostgreSQL, SQL Server, TiDB Cloud, and OceanBase from one interface, and covers modification as well as reads: insert, update, and delete operations phrased conversationally. Built with Next.js and TypeScript, it deploys as a single stateless Docker container in single-user mode - connection profiles live in the browser, so there is nothing server-side to maintain. A custom AI endpoint setting routes inference through any OpenAI-compatible API, including self-hosted models, and an optional database-backed mode adds accounts and quotas for offering the tool to a team. MIT-licensed.
Ties
A federated bookmark manager written in Rust: Ties (formerly linkblocks) is your own small corner of the web for saving, organizing, and sharing good pages, connected to the fediverse over ActivityPub. Instead of rigid folders, bookmarks live in arbitrarily nested lists that link together into a knowledge graph. Saved pages are fetched, converted to a readable archived version, and stored in the database, so full-text search covers titles, URLs, and the actual page text - and the content survives if the original disappears. The federation model is deliberately anti-viral: there is no global timeline and no algorithmic feed. You publish public lists for anyone, follow users whose taste you trust, and mark trusted users whose bookmarks become part of your search range - extendable to trusted-users-of-trusted-users for a wider net. Public bookmarks post to Mastodon timelines, and WebFinger lookup makes your handle discoverable across fediverse platforms. Operationally it is about as light as web software gets: a single binary with all assets baked in, integrated TLS so it can run without a reverse proxy, PostgreSQL as the only dependency, OIDC single sign-on, and a bookmarklet for one-click saves. Note the project is alpha: single-user instances only, and all data should be considered public. AGPL-3.0 licensed, built with Rust and htmx.
Hastebin
"Throw it on a haste and send the link" entered developer vocabulary because of Hastebin (haste-server), the minimalist open-source pastebin. Written in Node.js with three stated design goals - be really pretty, be really simple, be easy to set up - it does one job precisely: paste code, logs, stack traces, or config snippets, press save (or Ctrl+N for a new one), and get a short random-key URL to share. Syntax highlighting renders pastes readably across common languages, a raw view serves plain text for curl and scripts, and duplicate-and-edit makes iterating on a shared snippet trivial. The killer workflow is the terminal: with the haste-client utility or a one-line shell function, `cat error.log | haste` prints a shareable URL straight from stdout - the fastest route from a broken build to a colleague's eyeballs. Storage is pluggable through a simple adapter interface: filesystem by default, Redis with optional key expiration for pastes that should age out, and configurable key length, maximum paste size, and static documents. Self-hosting matters here because pastes often contain internal logs and stack traces that should never sit on a public pastebin - your instance keeps them inside your network, under your retention rules.
Journiv
A Day One alternative that keeps your most personal writing on your own server: Journiv is journaling purpose-built for self-hosters. The FastAPI backend runs on SQLite by default with optional PostgreSQL, Redis, and Celery for background work, behind a clean, minimal web UI. Unlike general note-taking apps, it ships the features journaling actually needs: customizable moods and mood groups, activity tracking, goals with automated progress from logged activities, and daily writing prompts filterable by category and difficulty so a blank page never stalls you. Quick Log captures a moment in seconds and expands into a full entry later; "On This Day" resurfaces entries from past weeks, months, and years. Multiple journals separate work, gratitude, and personal writing, with tags and full-text search across everything, plus media uploads with automatic thumbnails and an Immich integration for linking photo-library memories. Analytics chart mood trends and writing patterns over time. Data portability is taken seriously: native import of Day One exports, JSON/Markdown/HTML export, and a standalone HTML viewer that opens your archive in any browser with no server running. OIDC single sign-on works with Authentik or Keycloak, and multi-arch images cover amd64 and arm64.