When getting into something it´s wonderful to get some references and examples to have a look at. For some time I´ve collected URLs that might be in addition to the official Quartus site. I don´t know any of these people in person. But anyhow they seem to be nice...
  A bunch of these people are also attending a Wiki about Quartus Forth, maintained by Kris Johnson.
  In no particular order, here are some names:

Andrew Johnson is heading for a career in software on PDA, with GPS enabled mapviewers available for different areas.

Paul Randall has made a text generator with several alternatives, a time-killer, a cryptogram puzzle game with separate puzzle databases and a pattern editor to create custom structures.

Brett Blatchley has made a dice roller w/o using any of the PalmOS GUI components, source included. Programs can also be done this way! Besides Forth, he seems to be heavy into Java.

Dave Ruske made TinyELF, a COSMAC emulation running in your Palm. Source is available should you like to tinker with that old piece of silicon. It was written partly for fun and partly as an exercise. Besides there are some historic pictures and documents from the 1802 era of computing.

Heather Risedorph reports from an ongoing project, writing a classic arcade game, centipede/snake, especially aimed at newbies.

Ron Doerfler has made a checklist organizer for groups of people, with possibility to export data, an extension of this program to provide classroom management, specifically tailored for teachers and also made a portable surveying instrument for activities in cartography. All as shareware and published on his brother´s site.

Barry Ekstrand to support his successful Char-Ware project making his share of calculators. There´s a loan payment calculator, a Canadian mortgage calculator, an savings/retirement calculator, a college education cost/savings calculator and a Blackjack strategy tutor.

Erwin Schomburg has a site where you can get advice on "How To" with Quartus, to get you started. You´ll find an old pub game with source, where one shall find the logic of the game. He has made two versions of the Pentomino puzzle, one b/w and one color. There is an interesting analysis of what makes the b/w version tick. And there is a general application launcher for FlashPlug and one specific for the Pentomino puzzle color version. Also there is an utility to help you check an applications alarm. Yeah, also listen to his message.

Csabo here you´ll find source for the classic Minesweeper and for a Tetris game.

Eric Idema has implemented, as shareware, the traditional game of memory with color, levels and statistics and the classic game connect four. There is also some games in Java, like Tetris and Reversi.

Dave Bennett is experimenting with Palm computing in non-office, everyday work environments. His initial effort is on his farm. The site contains many programs for use in woodworking, like a program to set up a short measure tape on the Palm screen, a drill press speed chart, a program to provide rules for the use of extension cords and many more. There's also a bunch of miscellaneous programs, as a windchill calculator, a program for checking binary operations, a horse racetrack simulation, a thumb music generator, for those doing some work in the kitchen a conversion kit and some more. All include a tutorial to help others learn to program on the Palm. He uses the sun to keep his PDA charged!

Samuel Tardieu have a program, with source, that allows you to launch a network sync instead of a serial sync, a program to set the correct time onto a cellular phone and a program to empty a cell phone of SMS messages.

S. Igarashi makes shareware, among them a planetarium, a drawing utility, a scientific calculator, a 3D display, a mapviewer in Japan, a go game. Most of these exist in a Palm and a Sony Clie version. There's also available a VFS manager (expansion card support) with examples, in source.

Frank Aalbers developed several realtime strategy game, PalmWars, Knights & Peasants, RailRoad both in Color and Black&White..

Kris Johnson have program and source for a video poker simulator, a memory stretcher game, a metronome, an intersection simulator with pedestrians and lights and also a cooperative multitasking implementation with examples, e.g. a snowfall where each snowflake is administered by it´s own task.

Wade Carlson has made some medical applications. There is a program to help analyze arterial blood gases and a program to replace the pregnancy wheel, with ability to export data. Also an utility to monitor installations to ensure a complete uninstallation when so becomes desired.

Richard Chamberlain has put together a guitar tuner with alternative tunings, a metronome with many features and a musical instrument with some new harmonics.

Travis Casey have source for a UI library with sample code and documentation and more to come.

Trevor Steele presents a tutorial on how to use Palm OS table resources and have an electronic fullbore target rifle scorebook program.

Vadim Zaliva have source to look at what´s coming on the serial port, to fetch user name & HS id, a library to access the expense database and made an application to help splitting a bill and calculating the tip. There is an "How To" install PILA to UNIX. He seems to be a good craftsmen with the soldering iron.

Vassilii Khachaturov shelter a Reversi game with source. Some libraries with graphic words.

Serg Koren working on Mac. Made a benchmark of old Sieve with source. Put up a PQA, in preliminary version, allowing one to view the Quartus site and message boards.

Tammy Cravit has made a multi-sided dice roller with source.

E. Ross Helton has, as Freeware, a game for space adventurers, a program to chose the face of the day and a program to convert temperature and speed.

Winchell Chung is working on his Big project Ogre, a wargame with robot tanks.