You can get tclkits from many sources.

• kitcreator: self-serve kits on demand, nightly builds (broken) and stable builds for many platforms
• kbskits have many batteries (Windows and Linux)
• TWAPI in a kit (Windows)
• Tcl3d appkits .. also there are BAWT kits with many batteries
• patthoyts kitgen builds

Some slightly different builds:

• Androwish offers batteries-included tclkit-like distros (vanillawish, undrowish)

And a couple of links not working as of latest edit:

• Kroc's kits (Darwin)
• Tombert's kits .debs for ubuntu and windows builds
• Toadkits do a bit more magic in the build process, including static linking

ActiveTcl basekits are also available from teacup repositories.