The Portable Freeware Collection Forums

Ecco is still considered by many to be one of the best PIMs around (although development has stopped almost 10 years ago !). There is talk of a future open source project: http://tech.groups.yahoo.com/group/eccopro/ It can be run from a USB stick without a 'registry install' if 4 .dll files are copi...

Dot: Pop Peeper uses relative paths, check this: http://www.poppeeper.com/Forums/viewtopic.php?t=856

poppeeper.ini (settings) will be on the USB stick if you choose to install the program there, with all the data

During installation I selected the option to directly install it on my USB-stick including the poppeeper.ini file which holds all settings and all the folders. There's no 'c:\program files\pop peeper'-folder on my computer

Pop Peeper is an excellent email notifier with lots of features and is portable: it doesn't use the registry. Check it out at www.poppeeper.com