THIS IS OBSOLETE. Do not bother trying to download or use it (it's gone, anyway). Use the PortableApps.com Launcher instead.
I found that I'd want some frequently used apps on my PortableApps drive. So I coded a small program, which monitors an installation in order to make a PortableApp myself. That's Portable App Creator: It which monitors an installation in order to make a PortableApp. It should be used on a clean host-PC, with no traces of the application you'd wish to make portable. Just start monitoring and install the application to your PortableApps drive. Portable App Creator should work with any device.
A PortableApp created with Portable App Creator will (temporarily) copy the necessary files in %systemroot%\system32, %userprofile%, %allusersprofile%, %commonprogramfiles% as well as the necessary information in the registry to the host-computer. All original settings of the host-computer will be backed-up prior to running the PortableApp and are being restored after the PortableApp closes.
The first version was written in one day using AutoIt3 and RegShot. A lot of work has been done since, to make it useful for all people having a PortableApps drive.
Developing of Portable App Creator takes place using a (Virtual Box'ed) 32-bit, English version of Windows XP Professional SP3 (updated with all packages available at Microsoft Update). The package was developed to work on all 32-bit versions of Windows since 2000. The scripts have been written, tested and compiled using AutoIt 126.96.36.199, RegShot 1.8.2 and UPX 3.07. Other versions of AutoIt, Regshot and/or UPX may work too...
Note that according to the FAQ of RegShot, Portable App Creator will only work on Windows Vista if UAC is disabled.
Want to give Portable App Creator or (in short) PAC a try?
You can now download Portable App Creator 0·99 beta at RapidShare (MD5: 01ADB45828B71ECAE951619799E5DCF0, only 613 kB). See this post for the latest changelog. Please see the readme-file supplied with this package to find out what you need to do before you can use "Portable App Creator", the limitations of PAC and instructions on its usage. You may also want to watch the video demo I created using an older version of PAC at RapidShare (4.180 MB) or YouTube.
I won't be able to work a lot on PAC nor will take a look at this forum on a daily/weekly basis. I have a quite demanding job and two little children. So I am often very busy with other things.