Got nerfed? Here is the free version.
Pick your nerfed tool. We list the open-source replacement that does the same job for $0 (or close to it). Manually curated, no affiliate links, no recommendations driven by anything except actual fit.
Star counts are approximate, refreshed weekly via the GitHub API. List last human-reviewed 2026-05-09. Suggest an addition or correction: open a PR.
- Stable Diffusion WebUI (Automatic1111) ↗FREE / OSSAGPL-3.0★ 145k
Default Midjourney replacement if you have a GPU. Largest community + extension library.
Most-used SD frontendMassive extension ecosystemimg2img, ControlNet, LoRA traininginstall:git clone, run webui-user.bat / webui.shcaveat: Needs 8GB+ VRAM for usable speeds. Setup is fiddly. - Ollama ↗FREE / OSSMIT★ 130k
Easiest way to run a local LLM. Pair with Open WebUI for full ChatGPT replacement.
Run Llama/Mistral/Gemma/DeepSeek locallyOllama-compatible API for any clientBrew/winget/curl installinstall:brew install ollama && ollama run llama3.3caveat: Needs 16GB+ RAM for usable models. GPU strongly recommended. - Open WebUI ↗FREE / OSSMIT★ 95k
The default ChatGPT-replacement self-host. Massive ecosystem.
ChatGPT-style web UI for any backend (Ollama, OpenAI-compatible)RAG with file uploadsFunction calling, web search plugininstall:docker run -p 3000:8080 ghcr.io/open-webui/open-webui:maincaveat: Best paired with Ollama running locally. - ComfyUI ↗FREE / OSSGPL-3.0★ 65k
When you want full control over the diffusion pipeline. Power-user choice.
Node-based image/video pipelineSDXL, Flux, video diffusion modelsReproducible workflows you can share as JSONinstall:git clone + Python depscaveat: Steep learning curve vs A1111. - AppFlowy AI ↗FREE / OSSAGPL-3.0★ 65k
Notion + Notion AI in one self-hostable package.
Open-source Notion alternativeAI features integratedSelf-host or desktop app - Open Interpreter ↗FREE / OSSAGPL-3.0★ 60k
ChatGPT's Code Interpreter, but local and against any model.
Code Interpreter for any LLM, locallyFile ops + shell + browser controlPython-first but multi-languageinstall:pip install open-interpretercaveat: AGPL — be careful if integrating into proprietary product. - LobeChat ↗FREE / OSSApache-2.0★ 55k
Slickest UI of the open-source chat clones.
Polished chat UI with plugin storeMulti-provider (OpenAI/Anthropic/Gemini/local)Vision, voice, knowledge basesinstall:Vercel one-click deploy or docker composecaveat: Best with API-key access; some features paywall on hosted version. - Fooocus ↗FREE / OSSGPL-3.0★ 42k
If you want Midjourney's simplicity without ComfyUI's complexity.
Midjourney-feel UX (one prompt, presets)Built-in style libraryMinimal config — just runinstall:Download zip, run run.bat / run.shcaveat: Less customizable than A1111/ComfyUI. - OpenHands ↗FREE / OSSMIT★ 38k
Open-source Devin. Best when you want autonomous multi-step coding agents you control.
Sandboxed agent that runs full dev tasksWeb UI + CLI + headless modesPlug any LLM backendinstall:docker run docker.all-hands.dev/all-hands-ai/openhands:0.30caveat: Docker required. Heavier setup than CLI tools. - Coqui TTS ↗FREE / OSSMPL-2.0★ 38k
Production-grade TTS toolkit. Bigger than just one model.
Mature TTS toolkit (XTTS v2)Fine-tune on your own voice1100+ language support via modelscaveat: Coqui Inc. shut down — community fork active. - OpenHands (also covers v0/Bolt) ↗FREE / OSSMIT★ 38k
Closest open-source v0/Bolt clone. Sandboxed agent that builds apps.
Sandbox runs full coding tasks end-to-endBrowser + terminal + code-edit primitivesPlug any LLMinstall:Docker - ChatTTS ↗FREE / OSSAGPL-3.0★ 35k
Best free ElevenLabs replacement for English/Mandarin chat-style audio.
Conversational TTS — handles fillers, pauses, multi-speakerMandarin + EnglishReal-time on consumer GPUcaveat: AGPL. - AnythingLLM ↗FREE / OSSMIT★ 32k
When the use case is 'chat with my company docs' rather than general LLM.
Workspace-based RAG over your docsDesktop or self-host20+ vector DB integrationsinstall:Desktop app or Docker - aider ↗FREE / OSSApache-2.0★ 28k
Best Cursor replacement for terminal-comfortable devs who want auditable git history of every edit.
CLI-first, terminal-nativeGit-aware: auto-commits, branches, diffsWorks with any LLM provider (BYO API key)Strong repo-map contextinstall:pip install aider-chatcaveat: BYO API key (Anthropic/OpenAI/local). No GUI. - Jan ↗FREE / OSSAGPL-3.0★ 28k
Easiest desktop ChatGPT replacement for non-technical users.
Desktop app — no Docker, no terminalBuilt-in model marketplaceLocal-first, optional cloudinstall:Download from jan.aicaveat: AGPL. Mac/Win/Linux. - LibreChat ↗FREE / OSSMIT★ 25k
When you want ChatGPT's UX but as a self-hosted multi-user product.
ChatGPT clone with multi-provider supportPlugins (DALL-E, Wolfram)Auth + multi-userConversation forkinginstall:Docker composecaveat: Heavier setup than Open WebUI. - Cline ↗FREE / OSSApache-2.0★ 24k
Direct Cursor/Claude-Code clone inside VSCode. Best for devs already living in VSCode.
VSCode extension, native UXPlan/Act mode toggleBuilt-in MCP supportPermission-based file opsinstall:VSCode marketplace: 'Cline'caveat: BYO API key. Permission prompts can feel noisy. - Tabby ↗FREE / OSSApache-2.0★ 24k
When you need 100% on-prem code completion. No data leaves your machine.
Self-hosted, runs on your GPUOpenAPI-compatibleTeam collab featuresinstall:Docker image or Homebrewcaveat: Requires GPU for decent latency. Setup is non-trivial. - InvokeAI ↗FREE / OSSApache-2.0★ 24k
Cleanest UI in the SD ecosystem. Best for design-pipeline use.
Polished web UICanvas/inpainting workflowStudio-grade install experienceinstall:Installer .exe / .pkg / launcher script - Open-Sora ↗FREE / OSSApache-2.0★ 22k
When you want OpenAI Sora capability locally. Heavy GPU need.
Open-source video diffusion (Sora-style)Text-to-video and image-to-videoPublic model checkpointscaveat: Needs 24GB+ VRAM realistically. - AudioCraft (MusicGen) ↗FREE / OSSMIT★ 22k
Best free Suno/Udio alternative for music generation.
Meta's music + audio generation toolkitText-to-music via MusicGenAudioGen for sound effectscaveat: Output quality below Suno's; needs prompt engineering. - Continue.dev ↗FREE / OSSApache-2.0★ 21k
Best when you want local LLMs (via Ollama) and care about privacy. Strong autocomplete.
VSCode + JetBrains supportLocal-model friendly (Ollama integration)Custom slash commandsTab autocomplete + chatinstall:VSCode/JetBrains marketplace: 'Continue'caveat: Tab autocomplete needs a fast local model or hosted API. - Perplexica ↗FREE / OSSMIT★ 19k
Direct Perplexity replacement. Free if you BYO API key.
Open-source Perplexity cloneMultiple search modes (Academic, YouTube, Reddit)Self-host, BYO LLM + SearXNGinstall:Docker compose with SearXNG - SearXNG ↗FREE / OSSAGPL-3.0★ 17k
Use under Perplexica/Morphic for the search backend, or just as a private Google.
Privacy-respecting meta-search engine70+ search backendsFoundation for AI search toolsinstall:Docker - Bolt.diy ↗FREE / OSSMIT★ 17k
Direct Bolt.new replacement. Free if you bring your own API key.
Open-source fork of Bolt.new (StackBlitz)WebContainers in browserBYO API key (any provider)install:git clone + npm install - Goose ↗FREE / OSSApache-2.0★ 14k
When you want a polished agent from a real engineering org. MCP-native.
Block (Square)'s on-machine AI agentExtension marketplace (MCP servers)Fast, focused on dev workflowsinstall:brew install block/goose/goosecaveat: Newer than aider/Cline; ecosystem still growing. - F5-TTS ↗FREE / OSSMIT★ 14k
Voice cloning use case. MIT-licensed (rare for high-quality TTS).
Voice cloning from a 10-second sampleMulti-languageStrong prosody - Roo Code ↗FREE / OSSApache-2.0★ 11k
Cline's multi-personality cousin. Pick when you want explicit Architect-vs-Coder separation.
Cline fork with extra modes (Architect, Ask, Debug)Multi-mode workflowsCustom mode authoringinstall:VSCode marketplace: 'Roo Code'caveat: Same BYO-API-key model as Cline. - Morphic ↗FREE / OSSApache-2.0★ 8.5k
Lighter-weight Perplexica with prettier output.
Generative UI search engineStreaming results with rich cardsVercel-deployable in 1 clickcaveat: Smaller community. - Codeium ↗FREEMIUMfree tier
Closest free-tier replacement for Copilot. No usage caps on free.
Free tier with no token cap70+ language supportMulti-IDE (VSCode/JetBrains/Vim/Emacs)Self-host enterprise tiercaveat: Closed-source on the free tier. Enterprise plan exists for self-host. - Stable Video Diffusion ↗FREE / OSSStability Community License
Best image-to-video model with permissive-enough license.
Image-to-video model from StabilityRun via ComfyUI workflowFree for non-commercial; commercial license availablecaveat: Read the license — not pure open-source.