This library is a database of application architecture diagrams from open source projects such as Amanda, NTP, OpenPAM, OpenVPN, Overdose, Perl, PHP, Postfix, Python, Samba and TCL.

Diagrams app is available on the Mac App Store for $19.99 as a special launch price for a limited time. After that, the app will cost $29.99, but it’s a one-time purchase without any subscriptions.

The Architecture of Radio app, while not entirely accurate, makes something unseen visible, which is very cool. It’s a reminder that there’s a lot of beauty in the world that we can’t see.