Dead Link Checker - Check for broken links on any website
Postman - The Collaboration Platform for API Development
BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks
Insomnia REST - The most intuitive cross-platform REST API Client ð´
LinkChecker - LinkChecker is a free, GPL licensed website validator.
Assertible - Assertible software provides you with a simple and quick way to monitor your web services. It comes with automated QA tools that users can utilize to test and monitor their web services on different platforms and environments.