Freeware - HTML utility

AM-DeadLink

Freeware

Find Duplicated and broken links in browser favorites.

LanWhoIs

Freeware

Allows you to find out who, where and when registered the domain or you are interested in the website, as well as information about those it serves.

Win32Whois

Freeware

Enter the domain name (for example, microsoft.com) or its IP-address and get a detailed report, the report is not saved, does not require installation.

Xenu's Link Sleuth

Freeware

A great program, no restrictions on the number of pages and completely free.

Validates links on a website and provides detailed information.

I tried others, but this program works much faster, which is not unimportant for a large site.

With this program, you can create a Sitemap.xml.

BGTester

Freeware

The program is used to test gif, jpg, bmp and png images and see how they would look as a tiled background.