Self-Hosted Apps Built with FastAPI

3 self-hostable apps built with FastAPI you can run on your own server — compared on specs, deployment difficulty, and the SaaS each one replaces.

AI Agent Platforms

Langflow

A visual builder for AI agents and workflows: connect models, vector stores and tools as components on a canvas, then serve each flow through an API or as an MCP server. Runs on SQLite by default, or PostgreSQL for production.

PythonFastAPIReactTypeScript

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AI Chat Interfaces

LiteLLM

An open-source LLM gateway: one OpenAI-compatible API in front of 100+ providers (OpenAI, Anthropic, Bedrock, Azure, Ollama and more), with virtual API keys, per-key budgets and spend tracking, routing and fallbacks, and an admin UI. It is a proxy for your apps and tools, not a chat interface.

PythonFastAPIPostgreSQL

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Game library

RomM

A ROM manager that scans your retro game library, fetches metadata and artwork from providers such as IGDB and ScreenScraper, and lets you browse, download and play supported games in the browser through EmulatorJS.

PythonFastAPIVue

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