API testing tool. Which allows web developers to create and test custom HTTP requests.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- AppImageHub
- Google Chrome
- Chromium



Resonance API Client is described as 'Resonance is a clean and minimal API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Electron, it offers a modern and intuitive interface for developers' and is a API Client in the development category. There are more than 50 alternatives to Resonance API Client for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best Resonance API Client alternative is Bruno, which is both free and Open Source. Other great apps like Resonance API Client are Postman, Insomnia REST Client, Yaak and Insomnium.
API testing tool. Which allows web developers to create and test custom HTTP requests.



Native desktop app for Windows offers high-performance REST and HTTP API testing, low memory and CPU use, custom methods, portable version, proxy support, multiple environments, code generation, multilingual interface, and import/export in light or dark themes.




NativeRest is the most popular commercial alternative to Resonance API Client.








Hurl is a command line tool that runs HTTP requests defined in a simple plain text format. It can capture values, evaluate queries on headers and body response. It is very versatile: it can be used for both fetching data and testing HTTP sessions.



ArdorQuery is a cross-platform tool for performing any HTTP(S) endpoints like REST API, HTML, Images, GraphQL, OData etc.

gRPC is a modern open source high performance Remote Procedure Call (RPC) framework that can run in any environment. It can efficiently connect services in and across data centers with pluggable support for load balancing, tracing, health checking and authentication.

Upcoming API testing tool in beta, built in GoLang, supporting HTTP/gRPC, workspaces, environments, request management, and various content types. Features include dark mode, local data storage, Postman import, environment variable setting, and request chaining.





Hubql is the most popular SaaS alternative to Resonance API Client.
Treblle is a federated API Intelligence platform delivering full API visibility, security, and control from one integration point.



Treblle is the most popular iPad & Android Tablet alternative to Resonance API Client.
Thunder Client is a hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace.





