The User Contributed Library is at the new IUA web presence at IUA/EIUA Global User Community in the Document Library:
IUA EIUA Document Library
There is the main folder and a sub-folder - the sub-folder contains the entire, original UCL (last known version) which used to be physically distributed on tape. It is now available in XMIT format. Other, individual contributions that used to exist on the IUA web site are being uploaded as they are put into a standard distribution format, for consistent download and installation procedures.
If there is something in particular that you are looking for - please let me know and I'll locate it for you in the old, IUAASSN.ORG format. If the tool does not exist yet - it might just get written if there is a need for it and it is within our capabilities to locate or provide whatever you are looking for. Witness the recent addition of the "fix PDE" program (re-enable out of service programs) which also does "fix PLE" (re-opens closed LINEs).
I have been putting
newer utilities up on the new site
first, on the assumption that most of the older tools had already been downloaded by everybody who was interested in them.
HTH - cheers - Gary