Dev tools · alternatives · 2026
24 alternatives to Insomnia REST Client now open-source
Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets
Insomnia is an open-source API development platform that supports HTTP, REST, GraphQL, gRPC, SOAP, and WebSocket protocols. Designed for developers and API teams, it offers features including API design from OpenAPI… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Insomnia REST Client now open-source launched in 2017; newer entries below may have overtaken it.
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Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets
2020 · insomnia.rest · its alternatives →
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Build, manage, and run templated REST API requests
2015 · insomnia.rest · its alternatives →
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Hi HN! I'm Greg and I've been working on Yaak for just over a year. I usually describe it as a Postman alternative since most developers are familiar with that, but it's targeted more toward users that just want an API client (no mocking, testing, spec design, etc). Having also created Insomnia for a similar purpose, I never thought I'd build another API client again. But, after selling Insomnia in 2019 and watching it expand into the broader feature set of Postman, I was left wanting a simpler tool again. Yaak was my answer to that. It's hard to describe how it's better than the 100 other…
2025 · yaak.app · its alternatives →
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Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…
2022 · restfox.dev · its alternatives →
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Collaborative API Design Platform / Editor
2020 · insomnia.rest · its alternatives →
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Finally, a home for all your SQL queries.
2021 · rosefinchapp.com · its alternatives →
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Effortlessly discover API behaviour with a Chrome extension that automatically generates OpenAPI specifications in real time for any app or website.
2023 · github.com · its alternatives →
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List of awesome API clients. Postman and Insomnia alternatives - stepci/awesome-api-clients
2023 · github.com · its alternatives →
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Fern▲260We built the world’s first generated, idiomatic gRPC and REST SDK. If you have public gRPC and REST endpoints, Fern is the SDK provider for you.
2025 · buildwithfern.com · its alternatives →
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Anything API▲656Hey HN! We built Notte, a browser infrastructure and agents platform. Many of our users automate UI workflows or extract data from sites that don’t have APIs. In practice, we noticed that once an agent understands how a site works, parts of the task can often run without a browser by interacting with the same network requests the site uses. So we built Anything API: describe a browser task, and our agent explores the site, builds a function, tests it against your description, and deploys a callable REST endpoint. No infra to manage. How the build works: - Describe the task (best results come…
Mar 2026 · anything.notte.cc · its alternatives →
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Restfox▲69Browser based HTTP client inspired by Insomnia and Postman
2022 · restfox.dev · its alternatives →
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I've created an Insomnia workspace to make it easier to debug your stock trading code and learn the Alpaca API. You can read about how here: https://medium.com/automation-generation/using-alpacas-stock... The actual workspace JSON for you to import into Insomnia can be found here: https://github.com/alpacahq/insomnia-workspace
2018 · its alternatives →
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2023 · openapistack.co · its alternatives →
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Bruno ▲457Bruno is the Git-native API client for REST, GraphQL, gRPC and Websocket. A local and open-source solution to Postman. Fast, developer-first, and no cloud syncing.
2025 · usebruno.com · its alternatives →
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Asynchronous C networking library with HTTP server, WebSockets, reverse proxy, HTTP/2 gRPC client, TLS and event loop. - Softmotions/iwnet
2022 · github.com · its alternatives →
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Hey HN! We've developed OpenAPI AutoSpec, a tool for automatically generating OpenAPI specifications from localhost network traffic. It’s designed to simplify the creation of API documentation by just using your website or service, especially useful when you're pressed for time. Documenting endpoints one by one sucks. This project originated from us needing it at our past jobs when building 3rd-party integrations. It acts as a local server proxy that listens to your application’s HTTP traffic and automatically translates this into OpenAPI 3.0 specs, documenting endpoints, requests, and…
2024 · github.com · its alternatives →
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In this release I have concentrated on user experience: - Full support of shortcuts - Reworked collections management - Notifications - Improved UX gRPC clients I’ve worked with had drawbacks and didn’t fit my use-case in a way I was expecting, since I’ve started working with gRPC 3+ years ago. Since then, I wanted a tool that fits any need in gRPC world. This is why I created ezy. Compared to Insomnia and Postman, ezy offers better streams support, allows you to use Server-Side and Mutual TLS with custom TLS certificates, works with gRPC-Web and has a more slick UI/UX. If you are…
2022 · github.com · its alternatives →
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Hypi▲113A low-code backend as a service to build GraphQL & REST APIs
2020 · hypi.ai · its alternatives →
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Scalable open source pub/sub SDK with support for RPC, JWT authentication and Kubernetes — optimized for async/await
2016 · socketcluster.io · its alternatives →
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What it does: A Postman/Insomnia-like TUI for building, sending, and organizing HTTP/GraphQL/gRPC/WebSocket requests. Supports saved collections stored as YAML/JSON files, environment variables, auth presets, response diffing, and request history. Why it's needed: This is the single largest gap in the Go TUI ecosystem. The abandoned wuzz (10.5k stars) proved massive demand for terminal HTTP inspection, but it's been dead for years. Posting (Python, ~6k stars) and ATAC (Rust, ~2k stars) are thriving alternatives in other languages. The Go options — gostman and go-gurl…
Feb 2026 · github.com · its alternatives →
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With Stoplight, you can create OpenAPI descriptions, documentation, and mock servers much faster than other API tools — with no specialized knowledge required — all in one centralized platform.
2016 · stoplight.io · its alternatives →
Also compare
- Insomnia Designer – Open-source collaborative editor for API design alternatives
- Insomnia REST API Client alternatives
- Yaak – An open source, Git-friendly desktop API client alternatives
- Restfox – Open source lightweight alternative to Postman alternatives
- Insomnia Designer alternatives
- Insomnia-like client for SQLite alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →