Works offline

Your harnesses, the parts library and PDF export all run locally. Sign in once; it keeps working for 30 days without a connection.

Local .harness files

Open and save harnesses as files on your machine, alongside everything stored in the cloud.

Version control your harnesses

A .harness file is plain text, so you can keep it in git or any other system you already use, review changes, branch, and collaborate the same way you do with code.

Stays current

Updates download in the background and install when you restart.