Open-source alternatives
For each paid or closed product, the highest-scoring open-source projects in the categories that do the same job. They are picks, not exact replacements, so read the weaknesses before you switch.
A project marked "own claim" calls itself an alternative in its README.
Instead of Cursor
Compared in Coding agents and assistants- opencodeTerminal coding agent with build and plan modes77 out of 100
- orcaDesktop app that runs CLI coding agents in parallel git worktrees75 out of 100
- ArchonYAML workflow engine that runs coding agents in isolated worktrees73 out of 100
Instead of GitHub Copilot
Compared in Coding agents and assistants- opencodeTerminal coding agent with build and plan modes77 out of 100
- orcaDesktop app that runs CLI coding agents in parallel git worktrees75 out of 100
- 43 out of 100
Instead of Claude Code
Compared in Coding agents and assistants- opencodeTerminal coding agent with build and plan modes77 out of 100
- orcaDesktop app that runs CLI coding agents in parallel git worktrees75 out of 100
- ArchonYAML workflow engine that runs coding agents in isolated worktrees73 out of 100
Instead of Devin
Compared in Coding agents and assistants- opencodeTerminal coding agent with build and plan modes77 out of 100
- orcaDesktop app that runs CLI coding agents in parallel git worktrees75 out of 100
- ArchonYAML workflow engine that runs coding agents in isolated worktrees73 out of 100
Instead of Tabnine
Compared in Coding agents and assistants- opencodeTerminal coding agent with build and plan modes77 out of 100
- orcaDesktop app that runs CLI coding agents in parallel git worktrees75 out of 100
- ArchonYAML workflow engine that runs coding agents in isolated worktrees73 out of 100
Instead of Lovable
Compared in App builder starters and Design to code- ai-website-cloner-templateNext.js template with an agent skill that rebuilds a website from its URL77 out of 100
- screenshot-to-codeTurns screenshots and mockups into Tailwind, React or Vue code65 out of 100
- 47 out of 100
Instead of v0
Compared in App builder starters and Design to code- ai-website-cloner-templateNext.js template with an agent skill that rebuilds a website from its URL77 out of 100
- screenshot-to-codeTurns screenshots and mockups into Tailwind, React or Vue code65 out of 100
- 47 out of 100
Instead of Bolt.new
Compared in App builder starters- ai-website-cloner-templateNext.js template with an agent skill that rebuilds a website from its URL77 out of 100
- jeecgbootJava low-code platform with code generator and built-in AI app builder63 out of 100
- 47 out of 100
Instead of Replit
Compared in App builder starters- ai-website-cloner-templateNext.js template with an agent skill that rebuilds a website from its URL77 out of 100
- jeecgbootJava low-code platform with code generator and built-in AI app builder63 out of 100
- 47 out of 100
Instead of CodeRabbit
Compared in Code review and testing- open-code-reviewCLI that reviews Git diffs with an LLM agent and line-level comments73 out of 100
Instead of Firebase
Compared in Backends and databases- supabasePostgres backend with auth, storage, realtime and edge functions73 out of 100
- graphql-engineGraphQL API layer over Postgres, MongoDB, ClickHouse and SQL Server55 out of 100
Instead of Vercel
Compared in Deploy and hosting- dokploySelf-hosted PaaS for deploying apps and databases on your own servers85 out of 100
- dokkuSelf-hosted mini-Heroku PaaS that deploys apps with git push65 out of 100
Instead of Heroku
Compared in Deploy and hosting- dokploySelf-hosted PaaS for deploying apps and databases on your own servers85 out of 100
- dokkuSelf-hosted mini-Heroku PaaS that deploys apps with git push65 out of 100
Instead of ChatGPT
Compared in Chat UIs- LobeHubAgent workspace with builder, groups, scheduling and 10,000+ MCP skills80 out of 100
- AnythingLLMDocument chat and agent app with built-in RAG, MCP and multi-user support77 out of 100
- Open WebUISelf-hosted chat UI for Ollama and OpenAI-compatible APIs with RBAC and RAG76 out of 100
Instead of Perplexity
Compared in Search- MorphicSearch engine that answers with citations and renders rich inline components70 out of 100
- Local Deep ResearchAgentic research assistant with local LLMs, SearXNG and encrypted libraries65 out of 100
- GPT ResearcherResearch agent that writes cited reports from web and local documents64 out of 100
Instead of LM Studio
Compared in Model serving- LocalAIOne OpenAI-compatible server for text, speech, image and video models82 out of 100
- llama.cppC/C++ inference engine serving GGUF models over an OpenAI-compatible API79 out of 100
- vLLMHigh-throughput LLM serving engine with OpenAI and Anthropic APIs75 out of 100
Instead of Glean
Compared in RAG and knowledge and Search- LightRAGGraph-plus-vector RAG server with web UI and Ollama-compatible API76 out of 100
- Open NotebookSelf-hosted NotebookLM alternative with podcasts and 20+ model providers75 out of 100
- RAGFlowRAG engine with document parsing, agentic retrieval and citations72 out of 100
Instead of Copilot Studio
Compared in Agent platforms- LangflowVisual flow builder that deploys agents as APIs or MCP servers73 out of 100
- DifyVisual LLM app platform with workflows, RAG pipeline, agents and APIs72 out of 100
- AutoGPTBlock-based builder for agents that run on demand, schedule or trigger70 out of 100
Instead of NotebookLM
Compared in RAG and knowledge- LightRAGGraph-plus-vector RAG server with web UI and Ollama-compatible API76 out of 100
- 75 out of 100
- SurfSenseown claimOffline NotebookLM alternative that turns documents into decks, reports and podcasts68 out of 100
Instead of Zapier
Compared in Workflow automation with AI- n8nVisual workflow automation with code steps, AI agent nodes and 1500+ integrations76 out of 100
- ActivepiecesSelf-hosted workflow automation with TypeScript integrations, alternative to Zapier65 out of 100
Instead of OpenAI API
Compared in Model serving- LocalAIOne OpenAI-compatible server for text, speech, image and video models82 out of 100
- llama.cppC/C++ inference engine serving GGUF models over an OpenAI-compatible API79 out of 100
- vLLMHigh-throughput LLM serving engine with OpenAI and Anthropic APIs75 out of 100
Instead of OpenRouter
Compared in Gateways- OmniRouteOpenAI-compatible gateway that routes requests across hundreds of AI providers86 out of 100
- LiteLLMOpenAI-format gateway and Python SDK for calling 100+ LLM providers84 out of 100
- freellmapiOpenAI-compatible router that fails over across free LLM provider tiers76 out of 100
Instead of LangSmith
Compared in Observability- LangfuseTracing, prompt management and evals for LLM apps on ClickHouse74 out of 100
- PhoenixLLM tracing, evals, datasets and prompt playground built on OpenTelemetry74 out of 100
- promptfooCLI for evaluating and red-teaming prompts, agents and RAG71 out of 100
Instead of Pinecone
Compared in Vector databases- MilvusDistributed vector database with dense, sparse and hybrid search at scale81 out of 100
- MeilisearchRust search engine API with full-text, vector and hybrid search69 out of 100
- ChromaEmbedding database with a four-function API for Python and JavaScript64 out of 100
Instead of Midjourney
Compared in Image and video- ComfyUINode-graph engine for diffusion image, video, audio and 3D models75 out of 100
- MoneyPrinterTurboGenerates short videos from a topic with script, footage, voice and subtitles69 out of 100
- InvokeAICanvas-first web UI for Stable Diffusion and Flux image generation62 out of 100
Instead of ElevenLabs
Compared in Voice- 72 out of 100
- Speech-to-SpeechModular voice-agent pipeline exposed through the OpenAI Realtime API67 out of 100
- Pocket TTS100M-parameter CPU text-to-speech with streaming and voice cloning64 out of 100
Instead of Otter.ai
Compared in Voice- VoiceboxLocal voice studio for cloning, TTS, dictation and agent speech72 out of 100
- Speech-to-SpeechModular voice-agent pipeline exposed through the OpenAI Realtime API67 out of 100
- Pocket TTS100M-parameter CPU text-to-speech with streaming and voice cloning64 out of 100
Instead of Mem
Compared in Memory- hindsightAgent memory server with retain, recall and reflect operations78 out of 100
- MemPalaceLocal verbatim memory for coding agents on ChromaDB with 45 MCP tools77 out of 100
- agentmemoryPersistent memory server for coding agents, exposed over MCP and REST75 out of 100