Open-source alternatives to popular software
OSS Alternatives covers a small number of proprietary tools in depth rather than a large, shallow directory. Each page below ranks genuinely open-source alternatives by GitHub activity and spells out license, self-hosting, and pricing so you can pick one with confidence.
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Developer Tools alternatives
Browserbase
Cloud headless browser infrastructure for AI agents and web automation
8 alternatives
Power Apps
Microsoft low-code platform for building business apps
5 alternatives
GitHub Actions
CI/CD and workflow automation built into GitHub repositories
4 alternatives
incident.io
Incident management platform with on-call, status pages, and Slack-based response
5 alternatives
Netlify
Web hosting platform with Git deployments, previews, and serverless functions
7 alternatives
GitHub Copilot
AI pair programmer with completions, chat, and agents in your editor
6 alternatives
LangSmith
LLM tracing, evaluation, and monitoring platform from LangChain
8 alternatives
Replit
Browser-based IDE and AI agent that builds and deploys apps
2 alternatives
Firebase
Backend platform for apps with databases, authentication, and hosting
14 alternatives
Antigravity
Google's agent-first AI development environment
9 alternatives
Base44
AI app builder that creates and hosts full-stack apps from prompts
3 alternatives
CodeGPT
AI coding assistant for IDEs with chat, completions, and agents
9 alternatives
Opsgenie
Alerting, on-call scheduling, and incident management for operations teams
8 alternatives
OpenRouter
Unified API and marketplace for accessing many LLMs through one endpoint
3 alternatives
Jina AI
Search foundation APIs for web reading, embeddings, rerankers, and AI search
4 alternatives
Warp
Modern terminal with AI command assistance, autocomplete, and collaboration
19 alternatives
Kiro
Agentic development environment for shipping software with AI agents
14 alternatives
Claude Code
Agentic terminal coding tool
15 alternatives
OpenAI Codex
AI coding agent for multi-step software development
11 alternatives
Cursor
AI-powered code editor
10 alternatives
Claude
AI assistant for writing, research, analysis, and reasoning
12 alternatives
Lovable
AI app builder for full-stack applications
3 alternatives
Supabase
PostgreSQL backend-as-a-service platform
8 alternatives
GitHub
Git repository hosting, code review, CI/CD, packages, and collaboration
5 alternatives
Postman
API development platform for requests, tests, docs, and collaboration
13 alternatives