Best Open Source fastapi Libraries
A curated list of the most popular GitHub repositories tagged with fastapi. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1fastapi/fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production
#2headroomlabs-ai/headroom
Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.
#3fastapi/full-stack-fastapi-template
Full stack, modern web application template. Using FastAPI, React, SQLModel, PostgreSQL, Docker, GitHub Actions, automatic HTTPS and more.
#4mouredev/Hello-Python
Curso para aprender el lenguaje de programación Python desde cero y para principiantes. 100 clases, 44 horas en vídeo, código, proyectos y grupo de chat. Fundamentos, frontend, backend, testing, IA...
#5fastapi/sqlmodel
SQL databases in Python, designed for simplicity, compatibility, and robustness.
#6zhanymkanov/fastapi-best-practices
FastAPI Best Practices and Conventions we used at our startup
#7Evil0ctal/Douyin_TikTok_Download_API
🚀「Douyin_TikTok_Download_API」是一个开箱即用的高性能异步抖音、快手、TikTok、Bilibili数据爬取工具，支持API调用，在线批量解析及下载。
#8polarsource/polar
Turn your software into a business.
#9pydantic/FastUI
Build better UIs faster.
#10pydantic/logfire
AI observability platform for production LLM and agent systems.
#11dramaclaw/dramaclaw
A general-purpose AIGC video engine: script to finished film in one pipeline — dramas, ads, product videos, otome games, and more. | 通用 AIGC 视频引擎 —— 从剧本到成片一条流水线，漫剧、广告、电商、乙游皆可
#12raullenchai/Rapid-MLX
The fastest local AI engine for Apple Silicon. 4.2x faster than Ollama, 0.08s cached TTFT, 100% tool calling. 17 tool parsers, prompt cache, reasoning separation, cloud routing. Drop-in OpenAI replacement. Works with Claude Code, Cursor, Aider.
#13ormar-orm/ormar
python async orm with fastapi in mind and pydantic validation
#14uriyyo/fastapi-pagination
FastAPI pagination 📖
#153441293738/creatorhub
多平台内容监控·采集·搬运 一个 Web 面板管起抖音 / 小红书 / 快手
#16Amm1rr/WebAI-to-API
Webchat to API
#17caura-ai/caura
Caura (formerly MemClaw) — governed shared memory for AI agent fleets. Multi-agent, multi-tenant, MCP-native. Trust tiers, keystone policies, audit trails, knowledge graph, self-improving retrieval. Apache 2.0.
#18DemonDamon/AgenticX
AgenticX is a unified, production-ready multi-agent platform — Python SDK + CLI (agx) + Studio server + Machi desktop app. Features Meta-Agent orchestration, 15+ LLM providers, MCP Hub, hierarchical memory, avatar & group chat, skill ecosystem, safety sandbox, and IM gateway (Feishu/WeChat).
#19geolens-io/geolens
Self-hosted geospatial data catalog with semantic search (pgvector), OGC/STAC APIs, and map builder. Built on FastAPI, PostGIS, React, and MapLibre.
#20ChenShuo2004/cs-board
将参考声音和中文文案自动生成白板动画视频的本地 AI 工具。
#21dnotitia/akb
AKB — Agent Knowledgebase. Organizational memory for AI agents: vault-scoped docs / tables / files unified by URI graph, served over MCP.
#22ibuilder/massing
Open, self-hosted, IFC-native AEC platform: web BIM viewer + modeling, a ~100-module GC portal (RFIs, pay apps, CPM, construction accounting — double-entry GL/WIP → QuickBooks, e-sign), AI assist, IDS authoring, estimating + embodied carbon, a development proforma, and operate/dispose (CMMS, facility condition, rent roll, waterfall).
#23charan820/PhantomCrowd-Simulacra
PhantomCrowd AI Marketing Simulator 2026: Content Spread Forecasting with Local LLM
#2422004251-tech/dashdeck-harmonized-imports
Best Self-Hosted Multi-User Music Acquisition 2026
#25janaador0827-commits/simulacra-forge
Top Autonomous Multi-Agent Dialogue Systems for AI Character Emergence (2026)
#26Ali-Marandi/finsight-pro
AI-Powered Financial Analysis Desktop App — 7 Engines, 17+ Ratios, Bankruptcy Prediction, TSETMC Live, 100% Offline