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Top 23 TypeScript HTTP Client Projects
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Project mention: API Testing Tools Worth Knowing in 2026 - Alternatives to Postman | dev.to | 2026-06-29
Hoppscotch: https://hoppscotch.io
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Puter.js
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insomnia
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.
公式サイト: https://insomnia.rest/ GitHub: https://github.com/Kong/insomnia
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yaak
The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬
Project mention: Ask HN: What developer tool do you wish existed in 2026? | news.ycombinator.com | 2025-12-22 -
Project mention: Our response to the Axios developer tool compromise | news.ycombinator.com | 2026-04-22
I usually reach for ky these days since it's an extremely lightweight wrapper over `fetch` - basically just adds a few niceties
https://github.com/sindresorhus/ky
From the readme:
- Simpler API
- Method shortcuts (ky.post())
- Treats non-2xx status codes as errors (after redirects)
- Retries failed requests
- JSON option
- Timeout support
- Upload and download progress
- Base URL option
- Instances with custom defaults
- Hooks
- Response validation with Standard Schema (Zod, Valibot, etc.)
- TypeScript niceties (e.g., .json() supports generics and defaults to unknown, not any)
Of course, this is only for projects where I have to make a lot of HTTP requests to a lot of different places where these niceties make sense. In most cases, we're usually using a library generated from an OpenAPI specification and fall back to `fetch` only as an escape hatch.
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scalar
Scalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API References ✨ 1st-Class OpenAPI/Swagger Support
Project mention: Build a versioned Laravel API with auto-generated OpenAPI docs in 10 minutes | dev.to | 2026-06-10Open GET /api/doc in a browser. You don't get a raw JSON file — you get a ready-to-use interactive API reference (rendered with Scalar), with a version switcher across v1, v2, … already wired up. The package walked your controllers, read those docblocks, and produced a complete OpenAPI 3.0 document — parameters, enums, response schemas, the lot. These docs can't drift, because they are the code.
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I'd be more concerned about confusing it with https://github.com/sindresorhus/got, which is well-established (15k stars on GitHub is nothing to sneeze at).
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I use a nice vscode extension called vscode-rest and I love it.
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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.
Project mention: Why I Left Postman — The Real Cost of a Cloud-First API Client | dev.to | 2026-06-23Download Voiden here: https://voiden.md/download Repo, if you want to see how it actually works: https://github.com/VoidenHQ/voiden
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Project mention: Show HN: Safe-fetch 1.0 – type-safe fetch wrapper (no try/catch, RQ adapter) | news.ycombinator.com | 2025-09-05
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apigen-ts
Generate a fully typed TypeScript fetch client from OpenAPI/Swagger in one file. Supports OpenAPI 2.0, 3.0, and 3.1.
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fetchff
Fetchff is a lightweight, powerful and flexible HTTP client library designed to simplify request handling.
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next-nexus
An intelligent data layer library for the Next.js App Router, designed to slash server costs and simplify data management.
Project mention: Show HN: Next-Nexus – Optimize Next.js App Router SSR Costs with Smart Caching | news.ycombinator.com | 2025-10-11 -
scarlett
A strongly typed, TypeScript powered, with zero dependencies, rest client library based on Fetch API
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cloudflare-client
Lightweight universal Cloudflare API client library for Node.js, Browser, and CF Workers
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript HTTP Client discussion
TypeScript HTTP Client related posts
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Our response to the Axios developer tool compromise
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Show HN: I built an app but now I've seen the hordes of AI generated clones
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Show HN: Postchi, an IDE like API client
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ky + p-limit: Concurrency Control With Built-in Retry for Batch Requests
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Decorating Promises Without Breaking Them
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Prerelease of Ky 2.0
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Axios VS Ky: When to use which?
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A note from our sponsor - SaaSHub
www.saashub.com | 22 Jul 2026
Index
What are some of the best open-source HTTP Client projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Hoppscotch | 79,825 |
| 2 | insomnia | 39,897 |
| 3 | yaak | 18,875 |
| 4 | ky | 16,996 |
| 5 | scalar | 15,667 |
| 6 | got | 14,926 |
| 7 | vscode-restclient | 6,032 |
| 8 | wretch | 5,176 |
| 9 | voiden | 1,332 |
| 10 | node-libcurl | 716 |
| 11 | gotql | 410 |
| 12 | prestige | 402 |
| 13 | fetchbook | 150 |
| 14 | fetcher-ts | 132 |
| 15 | safe-fetch | 83 |
| 16 | fetch | 63 |
| 17 | apigen-ts | 54 |
| 18 | axios-react | 47 |
| 19 | fetchff | 39 |
| 20 | next-nexus | 33 |
| 21 | scarlett | 28 |
| 22 | cloudflare-client | 23 |
| 23 | dr-fetch | 22 |
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