Xenu's Link Sleuth - Xenus Link Sleuth checks Web sites for broken links.
ChatGPT Plugins by SamurAI - Access to chatGPT plugins without ChatGPT Plus
LinkChecker - LinkChecker is a free, GPL licensed website validator.
ChatGPT Plugins Developer mode - Built your own plugins on ChatGPT
Integrity - Feature comparison of link checkers for Mac: Integrity, Integrity Plus and Scrutiny
Pluginflux - Discover, Dive, Develop: The World of ChatGPT Plugins Awaits