Sherlo

Verify webhooks, outbound HTTP requests, or emails with a custom URL. A temporary URL and email address are always free.

Test results reporting and test case management. Integrates with popular test frameworks. Open Source software developers, individuals, educators, and small teams getting started can request discounted and free offerings beyond basic free projects.

Ship fast. Don't break things. AI-supported visual verification and tests you can actually trust. Free forever plan: 1 project, 500 runner-minutes/mo, 1 concurrent run, no credit card.

Provides a testing platform that can help teams of all sizes at different levels of testing maturity, including Katalon Studio, TestOps (+ Visual Testing free), TestCloud, and Katalon Recorder.

A free tool for developers and API testers to check if an API is CORS-enabled for a given domain and identify gaps. Get actionable insights.

Various free network and server tools.

Capture and inspect webhooks from your browser. Forward to localhost, or replay from history. Free to use.

It's like CodePen but for cross-browser testing. UI-licious lets you write tests like user stories and offers a free platform - UI-licious Snippets - that allows you to run unlimited tests on Chrome with no sign-up required for up to 3 minutes per test run. Found a bug? You can copy the unique URL t