Open source api projects

FastAPI framework, high performance, easy to learn, fast to code, ready for production

Hyperextensible, Lua-powered Vim-based text editor

Sleek, intuitive API development and testing platform

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Headless CMS with REST and GraphQL APIs out of the box

Lightning-fast search for your applications

Self-hosted AI runtime for text, voice, vision, and agents

Powerful API development and testing made effortless

An open-source engine that turns continuous content streams into search and monitoring. Durable ingestion, hybrid search, alerts, and plugins for formats, model

Open-source data platform for effortless content management

LLM API 管理 & 分发系统，支持 OpenAI、Azure、Anthropic Claude、Google Gemini、DeepSeek、字节豆包、ChatGLM、文心一言、讯飞星火、通义千问、360 智脑、腾讯混元等主流模型，统一 API 适配，可用于 key 管理与二次分发。单可执行文件，提供 Docke

REST API for any Postgres database

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec

Automate any website workflow with AI and computer vision

Secure password management for individuals and businesses

Industry standard API mocking for JavaScript.

No-code web scraping, crawling, and extraction platform

High-performance API gateway with built-in LLM support

Free offline machine translation API you can host yourself

Open-source API documentation and testing platform

Visual database for workflow automation across apps

An API documentation generator for JavaScript.

Build product integrations with 500+ APIs in hours

🔮 Graphile's Crystal Monorepo; home to Grafast, PostGraphile, pg-introspection, pg-sql2 and much more!

Offline documentation browser. Your personal reference library, searchable in an instant.

Lightning-fast open source search engine for big data

Open-Source AI Presentation Generator and API (Gamma, Canva, Beautiful AI, Decktopus, Presentations AI Alternative)

Universal API management for REST, GraphQL, gRPC & async

DiceBear is an avatar library for designers and developers. 🌍

Telegram Bot API for NodeJS

🕸️ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.

The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP API

Headless open-source eCommerce platform on top of PHP/Symfony/API Platform

Light, flexible and extensible ASGI framework | Built to scale

Effortless API mocking for seamless development

1200+ DevOps Bash Scripts - AWS, GCP, Kubernetes, Docker, CI/CD, APIs, SQL, PostgreSQL, MySQL, Hive, Impala, Kafka, Hadoop, Jenkins, GitHub, GitLab, BitBucket,

A RWKV management and startup tool, full automation, only 8MB. And provides an interface compatible with the OpenAI API. RWKV is a large language model that is

Design-first Go framework that generates API code, documentation, and clients. Define once in an elegant DSL, deploy as HTTP and gRPC services with zero drift b

Organize, collaborate, and conquer your tasks

Headless CMS with automatic JSON API. Featuring auto-HTTPS from Let's Encrypt, HTTP/2 Server Push, and flexible server framework written in Go.

Typesafe APIs Made Simple 🪄

Official Notion JavaScript Client

Secure, scalable API key management for developers

Run any process, on your machine or in an AI agent's environment, as if it were a pod in your Kubernetes cluster: real env vars, DNS, network, traffic.

QOR is a set of libraries written in Go that abstracts common features needed for business applications, CMSs, and E-commerce systems.

Build reliable AI agents with unified tool integration

The first AI agent that builds permissionless integrations through reverse engineering platforms' internal APIs.

PostgreSQL ➕ REST, low-code, simplify and accelerate development, ⚡ instant, realtime, high-performance on any Postgres application, existing or new, MCP server

Huma REST/HTTP API Framework for Golang with OpenAPI 3.1

Static site generator for .NET API documentation.

PRAW, an acronym for "Python Reddit API Wrapper", is a python package that allows for simple access to Reddit's API.

Create stunning data visualizations with ease

Modern command-line HTTP client for the API era

🐬 Beautiful, performant feature flags for Ruby.

OpenAPI based HTTP Client code generator

Input OpenAPI. Output SDKs and Docs.

✨ Reverse-engineered Python API for Google Gemini web app

A simple API client (postman like) in your terminal

Catch API bugs before your users do

Apache Log4j is a versatile, feature-rich, efficient logging API and backend for Java.