cvsq (CVS queued) is a tool that enables developers with a dial-up connection to work comfortably with CVS. It accepts same arguments as CVS but instead of directly processing them, cvsq stores all requests in a queue and handles them later. This way, you can mark several files for commit and upload them when you're connected to the Net.
bkcvs allows you to easily download the current KDE developer sources from the CVS repository and compile them without any user interaction. It automatically manages the source copy in a local directory, and asks for several other options concerning your future KDE CVS install. For example, you can specify which languages you want to use.
cvsroot is a script to help keep track of multiple sites when using CVS, and in particular the CVSROOT and CVS_RSH environment variables for those sites. It creates a $HOME/.cvsroot file, with shortcut names representing the different CVS sites. The new environment variables appropriate to the site selected will then be set, and a new shell will be spawned to keep the variables. In this way, you do not have to keep setting the environment yourself, and can rely on the script to keep track of things for you.