netstiff

Netstiff, formerly known as Webdiff, is a reliable web page update checker that has impressive features. With its support for various methods like size, date, diff, HTML, regexp and MD5 sum, it helps you track web page changes with ease. The best part, it highlights only the URIs with changes, thus fitting flawlessly into other scripts such as wget or mail.

In recent releases, Netstiff has gone the extra mile to enhance the user experience. By shifting from the old method, now by default, the program updates and shows changes automatically, making it easier for you to track changes as they happen. Also, the previous command "get" has been replaced with "update" for better accuracy and consistency.

All test methods are now diffable, making it simpler to understand test output. There are improvements with regular expression match tests, and HTTPS support has been fixed. The documentation (manual page) has also been updated, making it more user-friendly. Lastly, some internal and minor changes have been made to make the tool even more efficient.

Overall, Netstiff is an excellent choice for checking web pages as it is reliable, feature-rich and easy to use.