Jsnag is free to try. Download Jsnag
(You don't need to download again, the nag dialog on the evaluation version is removed with the registration key.)

If you like Jsnag, your $3 registration key entitles you to all future versions, and up to three concurrent installations of the program per user, i.e. home, work, portable.

Your return email address will be your Jsnag username. In case of duplicates, shared company addresses, etc., a numeral may be added to the end.

Order Registration Key for just $3
(Your email address along with the registration key will remove the nag dialog from the program)

Privacy Statement:
Your personal information, including email address, will never be sold or shared.