Underpass App Company
Jeff Johnson
Underpass App Company is a sole proprietorship founded in 2016 by Jeff Johnson, whose 15 minutes of fame was for solving the Mac OCSP appocalypse. Before starting his own company, Jeff was a longtime software engineer at Rogue Amoeba Software and also worked on the open source RSS reader Vienna.
Company News Blog
StopTheMadness Pro
Take back your web browser
Mac App Icon
App Store Badge
StopTheScript
Stop all the JavaScript!
App Icon
App Store Badge
Link Unshortener
Reveal the real URL
Mac App Icon
Mac App Store Badge
StopTheFonts
Block web fonts in Safari
App Icon
App Store Badge
Homecoming
for Mastodon
Open Mastodon URLs
in your own instance
App Icon
App Store Badge
Jeff's free open source utilities:

StopTheMacAppStore
Stop Safari from opening the App Store app

PrivateWindow
Open URLs in a Safari private window