Screaming Frog SEO Spider - The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links...
Pulno - SEO Audit and Website Analysis. Pull up your SEO.
Netpeak Spider - A desktop tool for fast and comprehensive technical audit of the entire website.
LinkChecker - LinkChecker is a free, GPL licensed website validator.
Dead Link Checker - Check for broken links on any website
Seodity - The complete SEO toolkit for improving your projects.