SOHO Notes

SOHO Notes (formerly StickyBrain) is a note-taking program that was developed by Chronos for Mac OS X. Its predecessor, StickyBrain, had been described as "Stickies on steroids". SOHO Notes has since been superseded by Notelife.

StickyBrain
StickyBrain 1 was introduced at Macworld Expo in January 2001. Unlike Stickies, StickyBrain prominently allowed for a categorizable browser. It also possessed a number of other features.

StickyBrain 2 required a PowerPC G3 or greater processor, and supported both Mac OS 9 and X. Despite not having all of the features of version 3, it did feature some less obtrusive palettes (such as for formatting).

StickyBrain 3 was released in Fall 2004 and required Mac OS X 10.3 (Panther) or later.

StickyBrain 4 was released in December 2005 and required Mac OS X 10.4.3 (Tiger) or later. SOHO Notes was developed simultaneously from the same code base, and added .Mac synchronization features.

Product migrations
In July 10, 2006, Chronos announced that StickyBrain would be replaced by SOHO Notes, with StickyBrain 4 users being offered free upgrades to SOHO Notes 5.5. A "modern" version of StickyBrain was briefly resurrected in 2015 for OS X 10.10 Yosemite or later. However, it too has since been superseded by Notelife, a newer product which was developed by Chronos for iOS, iPadOS, and macOS.

Version 9.3.6 is the last full release of SOHO Notes with support for OS X 10.11 (El Capitan). In November 2016, Chronos released SOHO Notes 9.3.7 for macOS 10.12 (Sierra) which is not feature complete and is intended for migration of user data to Notelife.