hoppscotch / hoppscotch

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

usebruno / bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Kong / insomnia

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

mountain-loop / yaak

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

AnInsomniacy / rayburst

Redefining the open-source download manager

Julien-cpsn / ATAC

A simple API client (postman like) in your terminal

foss42 / apidash

API Dash is a beautiful AI-powered open-source cross-platform (Desktop & Mobile) API Client built using Flutter which can help you easily create & customize your HTTP & GraphQL API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.

Kong / insomnia-mockbin

Insomnia Mockbin is the underlying backend for the API mocks capability of Insomnia. It is built and used by Kong, the author of the open-source Kong Gateway.

VoidenHQ / voiden

Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.

TeamHypersomnia / Hypersomnia

Multiplayer top-down shooter made from scratch in C++. Web version: https://play.hypersomnia.io Made in 🇵🇱

krishhgg / Insomnia

A macOS menu bar app that safely keeps your MacBook awake with the lid closed, for timed agent sessions.

stepci / awesome-api-clients

List of awesome API clients. Postman and Insomnia alternatives

insomniacslk / dhcp

DHCPv6 and DHCPv4 packet library, client and server written in Go

AnInsomniacy / aria2-next

Redefining the next generation of aria2

chapar-rest / chapar

Fast, native API client for REST, gRPC, WebSocket and GraphQL. A local-first Postman alternative written in Go: no Electron, no account, no cloud.

furudo-erika / awesome-postman-alternatives

Awesome API Clients & Postman Alternatives (Open Source, Free, Pro)

AtlasOmnia / donna-starter

Donna — a starter Hermes Agent profile: opinionated persona, 73 curated skills, guided first-run orientation, optional Token Router. MIT.

Aji-Q / levelfield

Structural information-asymmetry risk for event contracts — Somnia × DreamDEX Event Contracts Hackathon

OpenRAC / rac1-decomp

A work-in-progress matching decompilation of the original Ratchet & Clank (2002) for PlayStation 2 (SCES_509.16, PAL v2.00). Focuses on reconstructing clean, idiomatic C/C++ source code identical to the retail executable, paving the way for native PC re-implementation and game preservation.

weihubeats / RustFox

A high-performance, local-first API client & Postman alternative built with Rust, Tauri 2, and Vue 3.高性能、本地优先的 API 调试与测试客户端 (Postman/Insomnia/ApiFox 替代品)，基于 Rust + Tauri 2 + Vue 3 打造。

AtlasOmnia / community-plugins

Curated list of community-made plugins for the Hermes desktop client. Listed, not audited.

AtlasOmnia / EMH-A-Hermes-Diagnostic-Profile

A Hermes Diagnostic Profile

neutralinsomniac / openfpga-megacd

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AtlasOmnia / hermes-loops

Autonomous agent loops for Hermes Agent: the autoresearch harness and the health/improvement maintenance loops.