Freeware
This software may be downloaded and used for no cost at all.
ASCII
http://www.freewarepalm.com/database/ascii.shtml
Free. Displays a table of ASCII codes in decimal, octal or hex. Simple but useful for programmers.
ChemTable
http://www.geocities.com/palm_chemtable/
Free. A periodic table of elements. Tapping on any of the element boxes in the periodic table will bring up a form showing a list of physical/chemical properties. You can display either element symbols or atomic numbers in the table. You can also select a subset of the elements for display (Transition Metals, Halogens, Noble Gases, etc). Only half of the periodic table can be viewed at a time.
Delphi
http://astroblahhh.com/astrology/software/delphi_and_astrolib/
Free. If you ever wanted to cast birth charts for people at the drop of a dime, this is the software for you. This may help you read the thing, but I wouldn’t count on it.
Easy I Ching
http://www.villanovanet.com/palmos/index.html#EIC
Free. Casts I Ching hexagrams and provides interpretations of what they mean. The company that produces it also has a number of other divination-based Palm applications, including one on palmstry.
FileZ
Free. An indespensible tool for the Palm that allows you to view and manipulate the files your device contains. This include managing data cards and deleting. The interface is a little odd, in that selection doesn’t work exactly like you might expect, but once you figure out what it is doing, you’ll be fine.
LEDHead
http://www.peterhirschberg.com/handheld/ledhead/
Free. If you ever wasted countless hours playing the handheld Mattel sports games, get ready to regress to childhood. Complete with the obnoxious sounds, this application recreates these games (from scratch, as it turns out). If you like this, you might also be interested in a number of other palm emulators.
List
Free. A simple database application that allows creation of lists of data, with two defined 120 character fields and one 4k note field per record. There are a rather large number of databases available in the List format. Some programs also have ways of translating data into list format. For example, I use Delicious 2 ListDB to translate my Delicious Library data into List format (though I had to hack the code a little).
Secure It
http://www.schau.com/gz/palm/sit/
Free. There are a number of "password wallet" type programs for the palm, but the best of them is also free. Secure It uses Blowfish to encrypt data, supports various record templates (e.g. creditcard, password, pin) and allows the definition of others. It can also import and export data, if needed.
Toccer
http://www.atomiccog.com/products/toccer-for-treo/
Free. Usable only with Treos and only if they connect to the internet, this is an instant messaging application that uses AOL’s IM service. Pretty good interface that leverages the Treo’s 5-way navigator. It’s unclear how long this will remain free.
TuSSH
Free. Another application that only works with an Internet connection, this application is an SSH client. This makes more sense with Palms with keyboards, like the Treo, but if your grafitti skills are good enough, it’s usable on most Palms. It supports SSH2 as well.
Nagware
Nagware is software that asks you to pay a fee if you like it, and brings up periodic reminders to pay, but is otherwise full featured.
AutoMobile
http://www.linkesoft.com/automobil/
$20. Tracks car milage, fuel costs, etc. Sort of anal, but since getting a new car I’ve been geeking out tracking my "total cost of ownership". There are quite a few application list this, some of them even free, but this seems to just work much better.
Phone Technician
http://www.hobbyistsoftware.com/technician-more.php
$15. Another utility that should just be built into the Palm, this provides additional functionality for Palms that are also phones, like the Treo. Specifically, this allows you to use MP3 or other sound files as ringtones, as well as some other features I don’t use. Until paid for, this utility brings up a nag message after every phone call.
Planetarium
http://www.aho.ch/pilotplanets/
€24. Everything you wanted to know about celestial objects in the palm of your hand. Planetarium can be driven by databases of varying sizes, so you can choose the one that fits your needs and available storage. It also can communicate with certain brands of telescopes and GPS systems.
Crippleware
Crippleware is software that asks you to pay a fee, providing only limited features or duration until a fee is paid. There is, unfortunately, much more of this on the Palm platform than on the Mac.
Diet & Exercise Assistant
http://www.keyoe.com/DEA_Handheld.htm
$20. Track weight, diet and excercise information. You can track down to the individual foods you eat if you want to, or just track weekly progress. It has a food database, exercise log, etc. It’s not exactlty clear, but I think this can be used for 30 days until paid for.
PalmaryCalc
http://www.palmarysoft.com/products/calc/
$15. I’ve been using Reverse Polish notation (RPN) calculators for so long, I find it hard to go back. There are scads of Palm calculators, but this is the best RPN calculator I could find. It also supports standard (non-RPN) input, if you are into that. It also has multiple operation modes (simple, engineering, unit conversion, currency, tip, mortgage) and can convert from between hex, decimal, octal and binary. PalmaryCalc can be used full-featured for 30 days before requiring payment.
KoolSounds
http://www.toysoft.ca/koolsounds.html
$13. Use mp3 or other audio files to replace alarm sounds. With this software, I use my Palm as my primary alarm clock, waking up to music. The requirements are more stiff than the other apps listed here, so some older devices may not be able to handle it. Why the Palm doesn’t support this ability out of the box, I have no idea. Stops working after a seven day trial, unless paid for.
Life Balance
http://www.llamagraphics.com/LB/LifeBalanceTop.html
$40. This application is the primary reason I even use a palm. It is not your average to-do manager. It has a bit of a learning curve, but is the coolest to-do system I’ve ever used. Cool enough to pay the huge fee. It also has a desktop version which syncs with the palm, but you use the Palm version by itself if you want. You can use this product for 30 days before you must pay for it.
Pocket Tunes
$15. Newer Palms can play music files. There are a number of players, but Pocket Tunes seems to be the most robust. In addition to MP3, it can play OGG files, but can’t handle AAC yet (the writers can’t get a license from Apple). The UI is skinable. I happen to use an iTunes-looking skin, as most of the rest make me vomit. You can use Pocket Tunes for 15 days before paying for it.
Satchel
http://www.standalone.com/palmos/satchel/
$15. Even though the Treo can interface with the Backpack service using its web browser, Satchel provides a dedicated interface for the task in a much cleaner (and faster) way. You can use it for 30 days before needing to pay for it.
Spaceward Ho
http://palmgames.mobilefreon.com/products/spacewardho/index.html
$20. A classic strategic space military/economy game. It is a bit hard to explain, but is just the right mixture of complexity to make it fun, but not so much that playing a game takes days on end. It’s playable for free, but buying it provides smarter opponents, higher tech levels, larger boards, etc.
Tome Raider
$20. Tome Raider is an extremely fast eBook reader (more of a database really) that can handle huge data files very quickly. It boasts an efficient interface and makes it easy to build books in its data format, which means that a huge library of titles, many of them free, exist for this reader. Various dictionaries, the CIA World Fact Book, full and mini versions of the IMDB database, even the entire Wikipedia have been translated to work with Tome Raider. Until registered, Tome Raider prevents access to every fifth record.