I use CDex.

CDex | Open Source Digital Audio CD Extractor with more than 32,000,000 downloads

It's technically a CD Ripper, but you can record from analog input, and just change your input settings from microphone to Wave Out Mix. You can't edit whatever you record.

Goldwave is like Audacity, but it's only a trial edition and runs out after like 1000 actions or something like that.