Open-source developer tools
79 open-source projects with SaaS replacement mapping and self-host status.
AppFlowy
Open-source Notion-style workspace with docs and databases.
AFFiNE
Knowledge base that mixes docs, whiteboards, and databases.
Outline
Team wiki and knowledge base built for internal docs.
Logseq
Local-first outliner for notes, journals, and linked thinking.
Anytype
Local-first objects and spaces for notes and personal databases.
Wiki.js
Modern, Git-backed wiki built on Node.js with a rich admin UI.
BookStack
Documentation platform with a book-and-shelf structure in PHP and Laravel.
DokuWiki
Database-free wiki engine that stores pages as flat text files.
TiddlyWiki
Single-file personal wiki that runs in the browser or Node.js.
Joplin
Open-source Markdown notes and to-dos with E2EE sync across desktop and mobile.
Trilium Notes
Hierarchical personal knowledge base with scripting and self-hosted sync.
Standard Notes
End-to-end encrypted notes client with an optional self-hosted sync server.
Keycloak
Battle-tested open-source identity and access management.
Authentik
Flexible identity provider with flows, SSO, and proxy auth.
SuperTokens
Open-source auth with session management and optional managed cloud.
Logto
Open-source Auth0 alternative focused on OIDC and developer UX.
Authelia
Single sign-on and 2FA companion for reverse proxies.
PostHog
Product analytics, session replay, and feature flags in one suite.
Plausible
Lightweight, privacy-first web analytics.
Matomo
Full-featured open-source web analytics platform.
Umami
Simple, fast, privacy-focused analytics you can self-host.
OpenPanel
Open-source product analytics with cookieless tracking options.
Hoppscotch
Open-source API development ecosystem for HTTP and more.
Bruno
Git-friendly API client that stores collections as files.
Yaak
Desktop API client focused on offline use and import compatibility.
HTTPie
Human-friendly HTTP client for the terminal and desktop.
Restfox
Offline-first web and desktop API client.
Supabase
Open-source Firebase alternative on Postgres with auth and APIs.
Appwrite
Self-hostable backend for auth, databases, storage, and functions.
PocketBase
Single-binary backend with realtime DB, auth, and file storage.
Nhost
Open-source Firebase alternative with GraphQL on Postgres.
Coolify
Self-hostable PaaS to deploy apps, databases, and services.
CapRover
Easy self-hosted app PaaS built on Docker.
NocoDB
Turns any database into a smart spreadsheet UI.
Directus
Headless CMS and data platform wrapped around your SQL database.
Dockge
A fancy, easy-to-use and reactive self-hosted Docker Compose stack manager.
Fider
Self-hosted feedback portal for feature requests, voting, and discussion.
LogChimp
Open-source feedback boards and roadmaps for prioritizing feature requests.
ClearFlask
Feedback, roadmap, and changelog platform with credit-based voting.
ShipShipShip
Self-hostable changelog and kanban roadmap with community voting.
Quackback
Open-source feedback, roadmap, and changelog with AI triage and integrations.
Fleetbase
Modular open-source logistics OS with TMS, driver apps, and storefront APIs.
Open WebUI
Self-hosted AI chat UI for Ollama and OpenAI-compatible models.
LibreChat
Multi-provider ChatGPT-style interface with agents, plugins, and team access.
AnythingLLM
Desktop and self-hosted workspace for chatting with docs and local LLMs.
Cherry Studio
Desktop AI client with multi-provider chat, knowledge base, and agent mode.
Jan
Open-source desktop ChatGPT alternative that runs local models offline.
Ollama
Local LLM runtime to pull and serve open models with a simple API.
Zed
GPU-accelerated multiplayer code editor written in Rust.
VSCodium
VS Code–compatible binaries without Microsoft branding or telemetry.
Neovim
Extensible Vim-based modal editor focused on speed and Lua config.
Lapce
Lightning-fast Rust code editor with remote development support.
Helix
Post-modern modal editor with tree-sitter and multiple cursors built in.
OpenCode
Open-source coding agent with a terminal UI and broad model-provider support.
Aider
Git-native AI pair programming in the terminal with reviewable diffs and commits.
Cline
Autonomous coding agent as an IDE extension, CLI, or SDK with approval-gated steps.
Continue
Open-source coding agent and autocomplete for VS Code and JetBrains with custom models.
Tabby
Self-hosted AI coding assistant for completions you run on your own infrastructure.
CSP Evaluator
Google’s open-source tool for checking Content Security Policy strength and bypasses.
HTTP Observatory
Mozilla’s scanner for HTTP security headers, including Content-Security-Policy.
reportd
Self-hosted collector for CSP reports, Reporting API payloads, and Web Vitals.
CSP Kit
TypeScript CSP generator with presets for 100+ common web services.
OpenCsp
Self-hosted Phoenix LiveView dashboard for collecting and browsing CSP violation reports.
Vaultwarden
Lightweight Rust reimplementation of the Bitwarden server API.
Passbolt
Open-source password manager built for teams with sharing and role controls.
Padloc
Modern end-to-end encrypted password manager for individuals and teams.
LessPass
Stateless password manager that derives passwords instead of storing them.
Meilisearch
Fast, typo-tolerant search API you can run as a single Rust binary.
Typesense
In-memory search engine with geo-search and hybrid vector search.
OpenSearch
Apache-2.0 community fork of Elasticsearch for search and analytics.
FluidAudio
Local audio AI SDK for Apple devices covering speech-to-text, TTS, VAD, and speaker diarization.
Stoat
Self-hosted Discord-style chat platform with servers, channels, roles, and LiveKit voice.
Mattermost
Self-hosted team messaging focused on secure collaboration for engineering teams.
Rocket.Chat
Open-source team chat and omnichannel platform with channels, video, and customer messaging.
Zulip
Topic-threaded open-source team chat built for asynchronous, low-noise discussion.
RustDesk
Open-source remote desktop with optional self-hosted ID and relay servers.
Apache Guacamole
Clientless HTML5 gateway for RDP, VNC, and SSH in the browser.
PrivateBin
Minimalist zero-knowledge pastebin with client-side AES encryption.
MicroBin
Tiny Rust pastebin with file uploads, URL shortening, and optional encryption.