At my workplace we are using CVS as the version control system. Since we are using Windows mostly, TortoiseCVS and WinCVS serve as the GUI front-ends to CVS.
Is there anything like those front-ends for one of the distributed VCS (bzr, hg, git)? I know we could use the command line but that is not an option.
I've already tried Bazaar and was disappointed by TortoiseBzr.
And may I add -- do any of them have decent Eclipse integration? I'm hesitant to give up Eclipse's great CVS client.
Try Mercurial. It has a tortoise shell plugin and integrates with Eclipse.
I like bzr, but have not used the tortoise plugin; I believe Canonical are working on some front-ends for it as well. Oh, and of course there's an Eclipse plugin, so you can use your IDE as the GUI for it.
Mercurial seems to have the best GUI tools for Windows at the moment, but CVS or SVN GUI tools seem to be better, I hope this would change in the future.
Mercurial has the best support when it comes to DVCS. There's TortoiseHg for integration with Explorer and Nautilus (Linux) and there are two Eclipse plug-ins (MercurialEclipse and Merclipse) that work. The former offers nearly everything Mercurial offers, including Rebase, Push, Pull, graphical history, workspace synchronization etc.