Downloads
You can find the latest stable version (1.10.2) on the SourceForge download page. Notice: development snapshots have been moved from the web page to the download page for better visibility and easier access.
Links to CppUnit 1.10.2 (tarball format):
CVS
You can get the most recent source from CVS. See instructions in the CVS tab of the SourceForgeProject page about accessing the CVS repository. You can also see the CVS What's New file.
Alternatively, if you are behind a strict firewall, you can download the nightly backup tarball of the CVS repository (about 1.2Mb). You'll need to install it as a local CVS repository to use it.