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A little curiosity. A world of open source.
THE FIRST COLLECTIONPosting is a terminal-based HTTP client in the spirit of Postman and Insomnia. It stores requests as plain YAML files, works over SSH, and supports environments, autocompletion, tree-sitter highlighting, Vim keys, custom themes, Python hooks and cURL/Postman/OpenAPI import.
Hoppscotch is an open-source API development ecosystem providing a lightweight alternative to Postman and Insomnia for testing and designing APIs.
Parse Server is an open-source backend for Node.js and Express that can be deployed on infrastructure running Node.js. It provides REST and GraphQL APIs, Cloud Code, Live Query, push notifications, authentication, file adapters, and supports MongoDB or PostgreSQL.
An opinionated Node.js/TypeScript framework treating AWS Lambda as a first-class citizen, providing DDD domain events, Unit of Work transactions, RFC 7807 problem handling, and SaaS billing/metering via decorators and types.
A Go-based API service that validates OpenBao (formerly HashiCorp Vault) backup integrity by restoring snapshots and verifying expected secret values.
An unofficial, open-source Python client library for the FINRA API Platform that handles OAuth 2.0 authentication while returning raw httpx responses for the Query, Notification and Submission APIs.
Fiber is an Express-inspired Go web framework built on Fasthttp, offering routing, middleware, static file serving, WebSocket and SSE support with a focus on performance and low memory use.
Bruno is an open-source API client for exploring and testing APIs, designed as a lightweight, offline-only alternative to tools like Postman and Insomnia.
An open-source, single-executable Firebase alternative built with Rust and SQLite, featuring type-safe APIs and a WebAssembly runtime.
A community-maintained directory of 730+ free public APIs across 48 categories, with a searchable website and a free JSON API endpoint. Covers animals, anime, finance, geocoding, weather and more.
