Loader.io is a free load testing service that allows you to stress test your web-apps & apis with thousands of concurrent connections.

Selenium automates browsers. That's it! What you do with that power is entirely up to you.

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.

Render your Android screens without a physical device or emulator.

Gatling is a powerful open-source load testing solution that integrates with your development pipeline. It includes a web recorder and colorful reports.

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