Welcome Visitor! Please take a few seconds and Register
for our forum. Even if you don't want to post, you can still 'Like' and react to posts.
Expensive DSOs? No. Multichannel arbitrary analog inputs are a very, very good thing.
Citoriplus uses and has recommended to me this software/interface.
http://www.obddiagnostics.com/index.html
Frank has demonstrated it for me and it seems to be quite useful. And for under $100 it's tough to beat. Hopefully he'll chime in with more.