The OpenNETCF.IoC Framework is a public-domain-licensed (you can't get any more free and unencumbered than that) framework written in CE (framework version 3.5) that provides both inversion of control and dependency injection for .NET Compact Framework applications (it can be used on the desktop as well)
Kheb allows you to see exactly what changes any software makes on your Pocket PC. It works by taking complete snapshots of your mobile device's state, and creating a diff file that shows the changes between snapshots.
Kheb is a useful tool for software developers, ROM chefs, and advanced users
CleanerDumpfiles opens the folder '/Windows/System/Dumpfiles' with the file explorer and allows you to manually delete the temp files/folders created by the WindowsCE error reporter. NOTE: It's safe to delete ALL of the files in this folder if you are not working on debugging a project
Power Tweaker is an application that allows you to set up to 4 power profiles. Each profile defines backlight timeout and power off time for both AC and battery modes.
This application also allows you to set up a default profile that should be applied after each soft reset
HD2 SoftReset is a very simple tool which soft resets the device. Inspired on and intended to fit the HTC HD2 which does not have the traditional softreset button easily reachable (you need to remove the back cover lid for it) and still you need to have something like a stylus to press it, which HD2 neither has
Co0kie's Home Tab Editor is an application for editing the settings for Co0kieMonster's most excellent home tab mod. This application DOES NOT make any changes to Sense. You must have Co0kie's Home Tab installed
Mute4 is a very simple application. When run, it allows you to set your mobile phone to the vibrate or silent profile and also set a timeout for when you want it to restore the normal volume profile.
Going to a movie? Set Mute4 for three hours. Going to a meeting? Set Mute4 to one hour