Dev tools · alternatives · 2026
24 alternatives to Postman and Insomnia Alternatives
List of awesome API clients. Postman and Insomnia alternatives - stepci/awesome-api-clients
This is an open-source alternative to API testing tools like Postman and Insomnia. It provides developers and technical teams with a way to build, test, and debug APIs without relying on commercial platforms. The tool… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Postman and Insomnia Alternatives launched in 2023; 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
2017 · insomnia.rest · 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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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 →
- 5
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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Postman▲182Postman is a powerful HTTP client to test REST API
2014 · postman.com · its alternatives →
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Finally, a home for all your SQL queries.
2021 · rosefinchapp.com · its alternatives →
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Build, test, and document your APIs faster
2016 · postman.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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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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Thunder Client▲246Rest API client for VS Code, lightweight Postman alternative
2021 · thunderclient.com · its alternatives →
- 12OS
Hello! This is Jeane and Samuel and we’re building RecipeUI. RecipeUI is an open source Postman alternative that uses TypeScript to statically type and autocomplete requests. We built this because current API tools don’t deal with the fact that some APIs are just painful to work with. For us, it’s usually error after error as we try to figure out how to properly form the first request. We recorded a demo to show you how TypeScript helps us autocomplete a request correctly. https://youtu.be/O_Mly_p-g5s How does our platform improve the developer experience? The analogy is…
2023 · recipeui.com · 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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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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Hi, this is Mish and Sebastian. We are working on Step CI - a fully automated API testing platform for developers. Step CI works programming-language independent and for different API paradigms (REST, GraphQL, XML). Our CLI and test runner are available on GitHub (https://github.com/stepci) under the MPLv2 license. Since our last launch, Step CI is now able to generate automated tests for your API based on your OpenAPI (Swagger) spec. This saves you a lot of time as you never have to write and maintain your tests again! We would like to invite you to try our tool and give us…
2022 · stepci.com · its alternatives →
- 17
I spent a few hours last weekend testing whether AI can replace code by executing directly. Built a contact manager where every HTTP request goes to an LLM with three tools: database (SQLite), webResponse (HTML/JSON/JS), and updateMemory (feedback). No routes, no controllers, no business logic. The AI designs schemas on first request, generates UIs from paths alone, and evolves based on natural language feedback. It works—forms submit, data persists, APIs return JSON—but it's catastrophically slow (30-60s per request), absurdly expensive ($0.05/request), and has zero UI…
Nov 2025 · github.com · its alternatives →
- 18ST
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 →
- 19IC
Postwoman 👽 - API request builder https://liyasthomas.github.io/postwoman Feel free to contribute on GitHub 💚 https://github.com/liyasthomas/postwoman...
2019 · indiehackers.com · its alternatives →
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I shared a previous version of yapi a few months ago in the comments section of a post talking about the insanity of Postman being 'down'. yapi has developed into a more mature project since then! https://github.com/jamierpond/yapi Still very early, but it makes me much more productive vs Postman, Bruno, Insomnia, etc. If youre a nvim/tmux culture human, you might like this!
Dec 2025 · yapi.run · its alternatives →
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Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀 - apideck-libraries/portman
2021 · github.com · its alternatives →
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Your instant sleep assistant is reporting for dozing duty
2023 · pond5.com · its alternatives →
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Kreya▲90Hi HN! For over a year we've been working on Kreya. At first, it only supported gRPC, because the alternative tools (eg. BloomRPC) were very limited in their functionality. Since then, we have added many features, trying hard to keep the UI clean while still supporting advanced use cases. Yesterday, we released Kreya v1.8, which added support for REST! In our opinion, Kreya is a good alternative to the existing tools out there. Sure, it may not support all the features that Postman has. But we think that Kreya has some innovative approaches (eg. authentication or API importers) that users…
2023 · kreya.app · its alternatives →
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Also compare
- Insomnia REST Client now open-source alternatives
- Restfox – Open source lightweight alternative to Postman alternatives
- 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
- Postman 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 →