root check

Check that class target versions are as expected in a Java jar.

check, validate and limit your data entry according to your own preferences

Check and track multiple keyword rankings on multiple search engines, Free!

Check your images to remove location-revealing tags before sharing online。

Check identical files, uncover true duplicate files, recover valuable disk space

check email addresses from email lists, determine if the emails are valid.

check email address from a mailing list and determine if the emails are valid.

Check the fastest and easiest DVD copy solution for unbeatable video quality.

Check EDI X12 and EDIFACT for errors before its too late

Check that a server is sending the correct mime type for any given URL.