Self-hosted AI chat: open-source ChatGPT and Claude UI alternatives
ChatGPT Plus is $20/mo per user. Claude Pro is $20/mo per user. Self-hosted Open WebUI, LibreChat, and ChatGPT-Next-Web give the same chat UX with multi-model support (OpenAI, Anthropic, local Llama) on a $5/mo VPS, billed only by API usage.
The 24 picks, ranked by health
Health score is a 6-dimension composite. See methodology.
The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
A high-throughput and memory-efficient inference and serving engine for LLMs
A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, Llama, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.
Countly is a privacy-first, AI-powered analytics and engagement platform for understanding and optimizing customer journeys across digital applications, from desktop and mobile to IoT and connected environments.
Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active.
Live Helper Chat - live support for your website. Featuring web and mobile apps, Voice & Video & ScreenShare. Supports Telegram, Twilio (whatsapp), Facebook messenger including building a bot.
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
The fastest path to AI-powered full stack observability, even for lean teams.
Your own personal AI assistant. Any OS. Any Platform. The lobster way.
Transformers: the model-definition framework for state-of-the-art machine learning models in text, vision, audio, and multimodal models, for both inference and training.
LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.
LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.
Fabric is an open-source framework for augmenting humans using AI. It provides a modular system for solving specific problems using a crowdsourced set of AI prompts that can be used anywhere.
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.
The Multi-Agent Framework: First AI Software Company, Towards Natural Language Programming
The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.
A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.
LlamaIndex is the leading document agent and OCR platform
Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.
AI-Powered Photos App for the Decentralized Web
Opiniated RAG for integrating GenAI in your apps Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.
AI Data Vault - A query engine for AI Agents to securely query data from any datasource
Memory control plane for AI Agents in 6 lines of code
Specifically replacing
These categories on ossreplace cover the SaaS in this space.
Ready to self-host?
Most operators land on supabase (top health) and run it on hetzner for around $4.13/mo.