How to check broken in without using paid tools?

How to check broken in without using paid tools?

You can check it using Google webmaster tool which is a free tool for website analysis.

1) Crawl The Website
2) Click The ‘Response Codes’ tab & ‘Client Error (4XX)’ Filter To View Broken Links
3) View The Source Of The Broken Links By Clicking The ‘Inlinks’ Tab
4) Use The ‘Bulk Export > Response Codes > Client Error (4XX) Inlinks’ Export

Tools for checking broken links website:
Broken Link Checker
Google Webmaster Tools
Screaming Frog SEO Spider
Internet Marketing Ninjas Sitemaps Generator Tool
W3C Link Checker
Xenu Link Sleuth