selvanou:
What do you mean with "the other tool"? You mean "Experimental weak iv finder v0.2"?
As far as I know this tool is not released to the public. Free software is better than propietary software because among other things lots of people have tested and made contributions to the project. From my point of view if this tool exists but it is not public, is like if it does not exist.
Weplab is GPL and can be downloaded from
www.sourceforge.net/projects/weplab