I am the main coder behind SK Soft, which does mostly cross platform software in Java and releases open source software. Here's some other small programs:
Windows programs
BoxedCloak
a program to hide/show windows via for example the command line
BoxedDir
lists directories linux-style
BoxedHotkeys
a hotkey program that enables you to use the win-button. very easy to configure
BoxedIRC (source code)
a very minimalist IRC client
BoxedNotes
Notepad that supports big files and with a few useful functions that the normal notepad lacks (win2k)
BoxedPressedKeys
shows you how many keys you've pressed the last 15 seconds, if you ever wanna know how fast you type
BoxedShell
a shell-booter for win2k that enables different shells for different users
BoxedStartMenu
a small menu of shortcuts you can put anywhere on your screen
BoxedStartup
executes all programs and shortcuts in a directory and subdirectory
BoxedTaskbar
a taskbar
DropHole
drop holes onto your programs
OS X Programs
Timer
Simple timer app that counts down x minutes and tells you when the time is up.
Misc
Miranda2Adium
Use this to convert your exported miranda IM logs to Adium logs.