Launcher X
(US$18.95) by Little Mobile Creations

An elegant replacement launcher, not frequently updated but does the job well. There is an unofficial forum about it.

Notable alternatives include ZLauncher, frequently updated and well-supported.

The principal developer of Launcher X - Bozidar Benc, has passed away on 24th March, 2004.

DateBk5
(US$24.95) by Pimlico Software

A replacement DateBook which is much more functional than the built-in Datebook. Agendus is another popular replacement Datebook.

HandyShopper
*FREE* by Chris Antos

A shopping and to-do list tool, can be used for many other uses as well.

HappyDays
*FREE* by Jaemok Jeong

Keep track of birthdays, anniversaries and etc.

Progect
*FREE* by L. Burgbacher and Rick Price

An open source project management tool for Palm, there's also a Windows equivalent PDesk with a
companion conduit.

Converter
*FREE* by Matt N. Marsh

A simple to use tool for converting figures between various measurement systems.

Dial!
*FREE* by Holger Wirth

An utility make calls and send SMS through mobile phones using IrDA or Bluetooth connections, based on the built-in Address Book.

Bible+
*FREE* by Yih-Chun Hu and others

An offshoot from the previously open source Bible Reader by Poetry Poon. Actively developed, numerous bible translations are available (excluding commercial ones). Chinese translations are available on Gary Chan's website.

Bible Reader
*FREE* by AsaiSoft

The reader and several bible translations in the public domain are free, several other licensed translations are also available commercially.

Plucker
*FREE* by The Plucker Team

An open source document reader and offline browser, requires a parser/distiller on the desktop to convert webpages into Plucker's format.

There are desktop tools for Windows, Linux and MacOS X, which includes a parser/distiller and GUI to simplifies the conversion.

There's a more functional parser/distiller "Sunrise", note that it requires Sun's Java Runtime Environment (JRE) to run.

Hanying and Yinghan
(approx. US$15) by Abstract R&D

Chinese and English dictionaries for Palm, include DA tools for quick access.

It's simple to use but Abstract's upgrade policy is very rigid, registered users can only upgrade to newer versions released within 6 months from the date of registration.

KDIC and dictionaries from Brando WorkShop are free/cheap alternatives, but whether those dictionaries are properly licensed is doubtful.

Pleco's Oxford English & Chinese Dictionary seems to be good as well but it's rather pricey.

CJKOS
(US$28) by Du YongTao's Studio

For displaying Chinese, Japanese and Korean on English-based Palm devices.

There are several other CJK tools out there too. Such as ChOS and HandDragon.

DiddleBugHR
*FREE* by Maxim Vlasov

An updated DiddleBug to enable Sony Hi-Res (320x320) screen support.

FileZ
*FREE* by the nosleep software

A file management tool (use with caution!).

FindHack
(US$14.95) by Florent Pillet

A more functional "Find".

powerOne Personal
by Infinity Softworks

More functional than the built-in calculator, looks better too. Other calculators versions (e.g. Finance, graphs) are available from the developer too.

Register with Infinity to get updates (the latest Personal edition is at 3.0.1 as of writing).

TimeCopy
*FREE* by Gert-Jan Vons

Palm's clock drifts from time to time, like a PC's, use this to synchronize a Palm's clock with a PC. Together with a time synchronizer on the PC (Windows XP has one built-in), it should keep the Palm's clock accurate.

Toggle
*FREE* by Aaron Ardiri

Some software do not recognize SJ20's 4-bit greyscale display, use this to solve the problem.

On SJ20, the "Adjust Contrast" bar can be used to see if it's set to the desired bit depth. For example, when the default bit depth is "4" the bar should look like a continuous gradient instead of blocks.

AfterBurner
(US$9) by Daniel Wee

Overclock Palm devices.

App/DA Launcher
*FREE* by Hoshi Takanori

One of the better DA launchers.

JogDaily
*FREE* by Max Vlasov

Make the jog dial "jogs" faster.

FontHack123
*FREE* by Sergey Menshikov

The default fonts on Palm OS 4-based CLIE are very "thin" and often difficult to read, use this utility to replace the default fonts. Replacements Hi-Res fonts such as swiz - HiRes Clie Fonts are available on the Net.

A commercial font replacement solution is also available from Lubak. Another solution, Thin Font Fix by Hacker Dude-san which just "thickens" the default fonts is also available.

MiddleCapsHack
*FREE* by Rui Oliveira

Automatically capitalize characters written across the divider or started from corners.

No Streak Hack
*FREE* by Dr. Ing. Till Harbaum

To solve the flickering problem on greyscale devices, also lessen the flickering problem on SJ20, probably useless on colour devices.

X-Master
*FREE* by LinkeSOFT GmbH

A Hack Master.