Best Free & Open Source Alternatives to Thunder Client

Compare 7 open-source Thunder Client alternatives including HTTPie, Hoppscotch, Bruno and more

If you're looking for the best open-source alternative to Thunder Client, HTTPie is a strong place to start. If it doesn't quite fit your needs, there are plenty of other great options worth exploring, including Hoppscotch, Bruno, Insomnia and Scalar. We've ranked the top alternatives to help you compare your options and find the right fit.

HTTPie

🚀 HTTPie Desktop — cross-platform API testing client for humans. Painlessly test REST, GraphQL, and HTTP APIs.

Alternative to:

Thunder Client

Hoppscotch

Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)

Alternative to:

Thunder Client

Bruno

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

Alternative to:

Thunder Client

Insomnia

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

Alternative to:

Thunder Client

Scalar

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern Rest API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Alternative to:

Thunder Client

Hurl

Run and test HTTP requests with plain text — a simple yet powerful command-line tool for API testing.

Alternative to:

Thunder Client

Voiden

Design, test and document APIs in plain Markdown with a git-native, offline-first approach.

Alternative to:

Thunder Client

Frequently Asked Questions

Are there any open source alternatives to Thunder Client?

Yes, there are 7 open source alternatives to Thunder Client. Popular options include HTTPie, Hoppscotch, Bruno and more. These alternatives are free to use and many offer self-hosting options.

What is the best free alternative to Thunder Client?

The best free alternative to Thunder Client depends on your specific needs. HTTPie is a popular choice with self-hosting capabilities. All alternatives listed here are open source and free to use.

Can I self-host an alternative to Thunder Client?

Yes, 1 of the alternatives listed here can be self-hosted, giving you complete control over your data and privacy.

Why should I switch from Thunder Client to an open source alternative?

Open source alternatives to Thunder Client offer several advantages: no vendor lock-in, complete data ownership, no subscription fees, the ability to self-host for privacy and security, and active community support. You can also customize the software to fit your specific needs.

Thunder Client

Thunder Client is a lightweight REST API client built as a Visual Studio Code extension. It enables developers to test APIs directly within their editor without leaving the IDE, and offers team collaboration features through paid plans.

Visit Thunder Client

Compare Thunder Client Alternatives

Hoppscotch vs Insomnia

Hoppscotch vs Scalar

Hoppscotch vs Hurl

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