API Development
API clients, documentation, mocking, GraphQL
Showing 1-20 of 3,152 projects
public-apis/public-apis
A collective list of free APIs for developers, including API clients and testing tools.
supabase/supabase
Postgres development platform with Firebase-like features
fastapi/fastapi
FastAPI is a high-performance Python web framework for building APIs with type hints, OpenAPI, and JSON Schema.
gin-gonic/gin
Gin is a high-performance Go web framework for building APIs and web apps
hoppscotch/hoppscotch
Open-source API development ecosystem for building, testing, and managing APIs
typicode/json-server
Fake REST API with zero coding
protocolbuffers/protobuf
Protocol Buffers for structured data serialization
OpenBB-finance/OpenBB
Financial data platform for analysts, quants, and AI agents
openinterpreter/open-interpreter
A natural language interface for computers
grpc/grpc
gRPC is a high-performance RPC framework for building connected systems.
FuelLabs/fuels-rs
Rust SDK for Fuel Network for contract dev & testing
Kong/kong
API and AI Gateway for microservices and LLM traffic
DIYgod/RSSHub
RSSHub delivers millions of contents aggregated from all kinds of sources
colinhacks/zod
TypeScript-first schema validation with static type inference
apache/dubbo
Apache Dubbo is a Java-based RPC and microservice framework for building distributed systems.
usebruno/bruno
Open-source IDE for API exploration and testing
wg/wrk
Modern HTTP benchmarking tool for generating significant load on servers
trpc/trpc
Type-safe API framework for building full-stack applications
Kong/insomnia
Open-source API client for debugging, designing, testing, and mocking APIs with cross-platform support and multiple storage options.
BerriAI/litellm
Python SDK and Proxy Server for calling 100+ LLM APIs with cost tracking and guardrails
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