Single Clink is opensource and GPL,the source
link is send to the user on request. GPL allow to do this.
To get SC or SC_SSL source code, just private message User Rudi De Vos. In a few days time you will get a download link.
You can also pm bevtech, he now can distribute the links. I (Rudi) 'm
often not home so it van take a while before you get an answer.
PcHelpWare is not opensource.
http://www.uvnc.com/pchelpware/download/license.html
We are looking to extract the source of encryption part, when done,
it will be BSD.
PcHelpWare is the neweset replacment for Single Click and was created to make the the setup and configuration easier
I hope this Clears alot of questions up on the this issue..

Sourcecode for SCII was added to the download section on the new site
http://www.uvnc.com/pchelpware/downloadsc/index.html