debcheckroot is a tool that retrieves file checksums online or from read only media. It provides trusted verification of your root file system at least as far as you can trust your Internet connection or your verification medium (DVD, BD, etc.). Unlike debsums, it doesn't rely on locally stored md5sums which can be modified by an attacker along with the files themselves. It also provides cleaner and better structured output, and can spot files added to your system by someone else.
checkroot is an openSUSE equivalent of debsums. It enables retrieval of fingerprint updates online, allowing trusted verification of a root filesystem. This prevents a cracker from hiding his traces from "rpm --verify -a". If the verification fails, checkroot can download the package header containing the md5sums online. Alternatively, all md5sums can be fetched online (if you mistrust some of the fingerprints/private keys the locally stored md5sums are signed with).
ivepkg is a package manager with a focus on homebuilt distributions like Linux From Scratch. Therefore, ivepkg has no repository or network abilities, but is specialized on installing tarballs to a system. Its key features are an easy-to-use database (sqlite3) and a sha1 checksum of every installed file. These make it possible to know which files have been altered (for example, by a malicious attack).