Open Source Alternatives to Popular Software
Over 1 million users replaced their proprietary tools with open source software. Discover the best alternatives and join the movement.
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Postgres-powered backend platform for production apps
Stars
113,946Last commit
12 hours agoLicense
Apache-2.0
Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector search.
Open Source Alternative to:
Autonomous coding agents that complete real engineering tasks
Stars
91,869Last commit
11 hours agoLicense
MIT
AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.
Open Source Alternative to:
Local control smart home automation with privacy first
Stars
91,730Last commit
10 hours agoLicense
Apache-2.0
Open source home automation platform supporting 1000+ devices with local control, powerful automations, custom dashboards, and voice assistant. No cloud required.
Open Source Alternative to:
Share files securely across all devices without servers
Stars
Stars growing over the last 30 days95,655Last commit
1 day agoLicense
Apache-2.0
Free, open-source file sharing tool for nearby devices. Cross-platform support with end-to-end encryption, no registration required, automatic device discovery.
Open Source Alternative to:
LLM-ready web crawler built for AI data pipelines
Stars
86,281Last commit
4 days agoLicense
Apache-2.0
Open-source web crawler and scraper that produces clean, structured output optimized for LLMs, RAG pipelines, and AI agents. Supports async crawling, CSS/XPath/LLM extraction, and stealth browser control.
Open Source Alternative to:
Manage, build, and run AI agent teams around the clock
Stars
83,496Last commit
10 hours agoLicense
Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Open Source Alternative to:
High-performance code editor built for speed and AI
Stars
92,204Last commit
10 hours agoLicense
GPL-3.0
A Rust-built code editor from the creators of Atom and Tree-sitter, combining native performance with multiplayer collaboration and deep AI integration.
Open Source Alternative to:
Self-hosted uptime monitoring with a clean dashboard
Stars
92,922Last commit
11 hours agoLicense
MIT
Monitors websites, APIs, and services with real-time alerts, a status page, and support for dozens of notification channels. Self-hosted and Docker-friendly.
Open Source Alternative to:
Mac cleaner, app manager, and system monitor in one
Stars
Stars growing over the last 30 days72,909Last commit
11 hours agoLicense
GPL-3.0
Native macOS app that cleans caches, uninstalls apps with leftovers, maps disk usage, and shows live system metrics. One-time purchase, lifetime updates.
Open Source Alternative to:
Hyperextensible, Lua-powered Vim-based text editor
Stars
103,173Last commit
13 hours agoLicense
Unknown
A modernized Vim fork with built-in LSP, Lua scripting, Tree-sitter parsing, and an async plugin architecture that works the same across every platform.
Open Source Alternative to:
Open-source AI coding agent for your editor and terminal
Stars
70,858Last commit
13 hours agoLicense
Apache-2.0
AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.
Open Source Alternative to:
Text-based diagramming that renders in code and docs
Stars
90,867Last commit
16 hours agoLicense
MIT
Create flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
Open Source Alternative to:
The leading distributed search and analytics engine
Stars
78,383Last commit
11 hours agoLicense
Unknown
Elasticsearch is an open-source, RESTful search engine designed for scalability, reliability, and easy management.
Open Source Alternative to:
AI workspace for docs, projects, and wikis you control
Stars
77,777Last commit
17 hours agoLicense
AGPL-3.0
Open source collaborative workspace combining notes, databases, and AI with full data ownership, offline support, and self-hosting options.
Open Source Alternative to:
AI-powered analytics workspace built for investment teams
Stars
74,724Last commit
2 days agoLicense
AGPL-3.0
Connects proprietary, licensed, and public financial data with AI agents in a self-hostable workspace for asset managers, hedge funds, and banks.
Open Source Alternative to:
Docs, whiteboards, and databases in one privacy-first workspace
Stars
73,850Last commit
1 day agoLicense
MIT
An open-source, local-first knowledge base that merges structured docs, infinite whiteboards, databases, and AI into a single workspace for teams and creators.
Open Source Alternative to:
Self-serve data exploration and dashboard builder
Stars
75,311Last commit
11 hours agoLicense
Apache-2.0
Connect any SQL database, build charts with drag-and-drop or raw SQL, and publish interactive dashboards without writing application code.
Open Source Alternative to:
Sleek, intuitive API development and testing platform
Stars
80,684Last commit
11 hours agoLicense
MIT
Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.
Open Source Alternative to:
Persistent memory layer for AI agents and apps
Stars
67,825Last commit
3 days agoLicense
Apache-2.0
Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
Open Source Alternative to:
Chat with your documents using any LLM, fully private
Stars
67,570Last commit
1 day agoLicense
MIT
A desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.
Open Source Alternative to:
LLM gateway for auth, load balancing, and spend tracking
Stars
Stars growing over the last 30 days62,047Last commit
11 hours agoLicense
Unknown
Acts as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Open Source Alternative to:
Project management for teams mixing humans and AI agents
Stars
Stars growing over the last 30 days53,825Last commit
10 hours agoLicense
Unknown
Open-source platform that manages coding agents as team members, with task queues, skill libraries, runtime monitoring, and a unified activity feed.
Open Source Alternative to:
Unified observability for metrics, logs, traces, and more
Stars
77,511Last commit
11 hours agoLicense
AGPL-3.0
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.
Open Source Alternative to:
An independent browser engine built from scratch, not a fork
Stars
66,677Last commit
11 hours agoLicense
BSD-2-Clause
Open source web browser with its own engine, built from scratch without Blink, WebKit, or Gecko. Non-profit backed, no search deals, no user monetization.
Open Source Alternative to:
Coding agent that runs on local and open-weight models
Stars
68,672Last commit
16 days agoLicense
Apache-2.0
Coding agent that lets LLMs write and execute code, manage files, and control your computer using local or low-cost models.
Open Source Alternative to:
Self-hosted AI agent for chat, automation, and workflows
Stars
49,357Last commit
11 hours agoLicense
MIT
Lightweight, self-hosted AI agent that runs in a web UI, terminal, or chat app, handling long-running workflows with controlled token budgets.
Open Source Alternative to:
All-in-one business platform covering ERP, CRM, and more
Stars
55,321Last commit
11 hours agoLicense
Unknown
Integrated suite of business apps covering accounting, CRM, inventory, eCommerce, HR, and project management, available free as Community or paid Enterprise edition.
Open Source Alternative to:
Project management for teams and AI agents
Stars
61,452Last commit
3 days agoLicense
AGPL-3.0
Open source project management platform combining issues, wikis, and AI agents in one workspace. Available on cloud, self-hosted, and air-gapped deployments.
Open Source Alternative to:
Free, open-source software for video recording and live streaming
Stars
78,237Last commit
3 days agoLicense
GPL-2.0
OBS Studio offers high-quality video recording and live streaming capabilities, supporting multiple platforms and providers.
Open Source Alternative to:
Build a custom CRM without the proprietary lock-in
Stars
Stars growing over the last 30 days59,760Last commit
10 hours agoLicense
AGPL-3.0
Self-hostable CRM built for technical teams who need a fully customizable, extensible platform without vendor lock-in or proprietary tooling.
Open Source Alternative to:
Real-time monitoring for systems and applications
Stars
81,134Last commit
12 hours agoLicense
GPL-3.0
Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.
Open Source Alternative to:
Headless CMS with REST and GraphQL APIs out of the box
Stars
73,381Last commit
1 day agoLicense
MIT
TypeScript headless CMS that generates REST and GraphQL APIs from your content model, with a no-code builder, plugin system, and full self-hosting support.
Open Source Alternative to:
Self-hosted timeline for quick notes, logs, and snippets
Stars
64,081Last commit
18 hours agoLicense
MIT
Memos is a self-hosted, open-source note-taking app built around a private timeline. Write in Markdown, skip the folder setup, and keep your data on your own server.
Open Source Alternative to:
A modern terminal built around AI coding agents
Stars
65,708Last commit
3 days agoLicense
AGPL-3.0
Terminal built for running AI coding agents like Claude Code, Codex, and Gemini CLI, with shared context, interactive code review, and multi-session management.
Open Source Alternative to:
General-purpose AI agent for code, workflows, and more
Stars
55,729Last commit
11 hours agoLicense
Apache-2.0
Local AI agent with a desktop app, CLI, and API that connects to 15+ LLM providers and 70+ extensions for code, research, automation, and data tasks.
Open Source Alternative to:
Deploy apps, databases, and services to your own server
Stars
Stars growing over the last 30 days64,720Last commit
10 hours agoLicense
Apache-2.0
Self-hostable deployment platform that lets you deploy apps, databases, and 280+ one-click services to any server via SSH, with Git integration and automatic SSL.
Open Source Alternative to:
Run open-source AI models privately on your own device
Stars
77,358Last commit
1 year agoLicense
MIT
GPT4All runs open-source language models locally on Windows, macOS, and Linux with no cloud dependency, keeping your data on your machine.
Open Source Alternative to:
Fast GPU-accelerated terminal with native UI design
Stars
62,600Last commit
14 hours agoLicense
MIT
Experience blazing-fast terminal performance with GPU acceleration and platform-native UI. Cross-platform compatibility meets modern design.
Open Source Alternative to:
Open-source backend in a single file
Stars
61,619Last commit
3 days agoLicense
MIT
A lightweight, self-hosted backend solution with real-time database, authentication, and file storage capabilities.
Open Source Alternative to:
Self-hosted Bitwarden server that runs lean on your hardware
Stars
69,685Last commit
23 hours agoLicense
AGPL-3.0
Unofficial Bitwarden-compatible server written in Rust, built for self-hosting on low-resource hardware without sacrificing client compatibility.
Open Source Alternative to:
Open source metrics collection, storage, and alerting
Stars
66,772Last commit
11 hours agoLicense
Apache-2.0
Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.
Open Source Alternative to:
Multi-model AI desktop client with local-first privacy
Stars
52,988Last commit
10 hours agoLicense
AGPL-3.0
Desktop AI client for Windows, macOS, and Linux that connects 300+ models from 50+ providers, with local storage, a built-in knowledge base, and autonomous agent mode.
Open Source Alternative to:
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