Our Software. See our selection of programs for OS X.

Welcome to TurboZen, developer of personal computer software, mostly Macintosh, some MS-Windows.

My freeware utilities have source code links on their individual web pages. Other useful source code is here.

I've been developing Macintosh software since 1985. Take a look around and let me know what you think.

My permanent calendar notepad, formerly Cal version 3.06, has now been replaced by the brand new Daytz 2.1.7. I published Cal under the Mosaic Codes name.

About the name: TurboZen is about reaching enlightenment, and the serenity that comes from transcending worldly things, and getting there fast and hard.


Be patient and achieve all things. Be impatient and achieve all things faster.

Thanks for stopping by.

-- David Phillip Oster mailto:oster@ieee.org