Insomnia
Insomnia is an open-source API client for REST, GraphQL, and gRPC with workspace syncing.
About This Tool
Insomnia focuses on a clean UI, environment management, and multi-protocol support. Many developers prefer it for testing APIs they build with Copilot’s help.
Related Tools
View all →
CodeSandbox
Online sandboxes for quick React and frontend experiments.
category:browser-toolssandboxreact
HTTPie
Human-friendly HTTP client for testing APIs from the terminal.
category:clicliapihttp
StackBlitz
Browser-based dev environment for JS/TS frameworks.
category:browser-toolssandboxfrontend
Redux DevTools
Time-travel debugger for Redux applications.
category:browser-toolsreduxstatedebugging
React DevTools
Inspect React component hierarchies and props.
category:browser-toolsreactdebuggingfrontend
Hoppscotch
Lightweight, open-source API tester in the browser.
category:browser-toolsapiopen-source