Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

WebLOAD – Performance and Load Testing for the Most Challenging Web Applications

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.

Realistic performance testing with unrivaled reporting. Develop locally, scale globally, and retain full access to all your data. 100% Open Source.

Mock and modify HTTP request for exploratory testing.

Render your Android screens without a physical device or emulator.