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# JPU Tools for Mac Devs
- URL: https://www.chrismessina.me/blog/jpu-tools-for-mac-devs/
- Published: 2006-06-23T13:35:57.000Z
- Updated: 2026-03-25T03:36:26.000Z
- Author: Chris Messina
- Tags: Asides, Social justice, Technology

JPU -- *Just Plain Useful* \-- tools for the Mac have been updated recently. Haven't tried them, but might be worth a look: first, [Aquaticprime](http://aquaticmac.com/?ref=chrismessina.me) is a free, open-source secure registration method for shareware applications; second, [Sparkle](http://www.andymatuschak.org/pages/sparkle?ref=chrismessina.me), which is "a module that developers can stick in their Cocoa applications to get instant self-update functionality".

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### 💬 Comments from the original post

**[Blake Burris](http://cocoaradio.com/?ref=chrismessina.me)** · 2006-06-30 13:34:38

Right on Chris. We all love to see these sorts of contributions to the Mac dev community.