Although the Free CL Tools namespace is not by any means full, there are various names (often containing the letters CL) that are potentially oversubscribed. CLiki can be used as a tool to help manage this stock of names in that if there's a page on cliki with your project's preferred name, this is an indication that you probably want to choose another name.
This does tend to break down rather, though, if people create CLiki pages for software that doesn't exist and expect the same treatment. So: if a page has a Vapourware tag, it may be repurposed for some other software that can actually be downloaded. If you come across pages that describe non-existent work, please add this tag.
Here is a list of such pages: