Palm OS did not officially offer SD card support until OS 4. While no older devices were released with SD card readers built-in, it is possible to homebrew custom devices with a combination of older Palm OS and SD card readers.

Open 2sky is a full-featured planetarium application for Palm OS, released as open source by Kevin S. Polk in 2010.

Some of its features include:

  • Star catalogs up to magnitude 11 (and smaller catalogs for devices with limited ...

Can’t remap that home button? Wish you had more than 4 hard keys? ButtonsEx is here to help!

ButtonsEx is a Palm OS 5 app that allows assigning shortcuts to every face button on your Palm–including 5-way navigation! It can also circumvent ...

Pocket Aargon is a handheld version of Aargon Deluxe, the popular PC laser puzzle game. The game consists of a series of 10x10 "levels", each containing one or more colored lasers, and one or more "targets", represented by colored coins. The player ...

The ultimate Pool experience on Palm! Pool Deluxe by Deluxeware features polished graphics, realistic physics, and a variety of play modes against both human and computer opponents.

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Z-Machine interpreter (Frobnitz for Palm OS) is needed to play this game! Converted to PDB with Frobnitz Palm 1.02 z2pdb.exe

An amazing high quality card game pack including 10 well-known card games for Windows PCs, Palm OS and Pocket PC.

Features:

  • 10 popular card games
  • Authentic graphics, smooth animations
  • Original soundtrack and ...

JACK OR 100 WAYS TO BARBECUE is a 2D platform game which brings to you the fun of "jump & run" and a lot of brain exercise while solving delicate logical problems. Your aim is to find the exit of each level, which is well hidden by doors and ...

Battery Graph will track and display your on-off switches, battery life, battery usage, and charge times.

This program requires OS 3.5 and is not accurate on devices which do not have rechargeable batteries.

Beware, the event database ...