SourceForge http://www.sf.net/ - aka SF - is an ambitious attempt to provide open source projects with freely available source code , bug, and request management facilities, mailing list support, compile farm access, software distribution, and more.
The effort has over 324,000 projects at this time (2013-08-31).
Free to OpenSource developers, and development collaborators, SourceForge provides:
APN 2013-08-31 The list below is hopelessly out of date. Your are better off going to SourceForge Tcl directory
But rather than advertising SourceForge here, go browse the projects, or start your own, and announce it below:
...
...
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etc.
There is also a small code snippets library there:
http://sourceforge.net/snippet/browse.php?by=lang&lang=11
Please note that not everyone is perfectly content with sourceforge:
http://www.advogato.org/article/376.html
http://www.advogato.org/article/357.html
You may not agree with them, but they mention some reasonable points.
DKF: IMHO, SF sucks. But it is really nice that they are providing/handling all the sysadmin/hardware side of things, so I guess it doesn't suck too much.
Where in all of SF does one find the tclconfig module that so many TEA based extensions needs?
AK: It is not a module, but a subdirectory in the module 'sampleextension' in the project 'tcl'.
Get to a bug report, knowing only its number (219137 in this example):
https://sourceforge.net/support/tracker.php?aid=219137