About Boomerang
Fast, lightweight API testing in your browser
Our Story
A decade ago, working with both SOAP and REST APIs meant firing up a heavy desktop client, waiting for it to load, and listening to the laptop fans spin up, just to test a simple endpoint. There had to be a better way.
Boomerang was born right where developers live: the browser. No massive installs. No waiting. Just instant API testing that gets out of your way.
That simple idea became Boomerang, a fast, lightweight tool built for real‑world API work across REST and SOAP.
Mission
Our mission is simple: build a lightweight API client for quick testing across both SOAP and REST, without installing any additional desktop clients.
What We Stand For
- Lightning fast. Launches instantly in your browser (about ~500KB zipped).
- Simple by design. Clean interface that stays out of your way.
- REST & SOAP. Import from OpenAPI/Swagger or WSDL and test with ease.
- Privacy first. Your data stays on your machine. No signups, no cloud.
- Powerful scripting. Pre-request scripts and assertions when you need them.
Used by Thousands
Today, thousands of developers use Boomerang daily. Over the past decade, the focus has stayed the same: help you test APIs quickly, without friction.