I’ve already pointed out a few note-taking, organizer-type applications — hnb is my favorite, probably followed by vimwiki; but that’s certainly not the end of the list. You’ll need a list, just to keep track of all the programs you can use to make lists.

The implementation of the X suite allows for the creation of a wide variety of graphical window managers. Although there is a great website that documents the wide array of window managers both large and small called xwinman lets take a look at window managers roughly in order of appearance.

Ah, the humble task list. For such a simple concept, Google has made it surprisingly difficult to use their task list service. You can pull it up in Gmail, and add it as a widget in iGoogle, but there doesn't seem to be a standard way to use the task list on it's own. Even Android users have been left out in the cold with no kind of official task list widget or app.

I have been recently been looking into desktop managers other than Gnome and KDE. Fortunately, with Ubuntu (and probably others) it is relatively easy to download and install several such desktop managers, and then choose between them on login.

Most of the Linux users should be familiar with Gnome and KDE since both of them are the most commonly used desktop managers in the various Linux distros. Now, if you are using an old PC with low hardware specs, you might find that the above two desktop environments are too heavy for your computer to handle.

Here I made a list of some of the best free and open source file managers as a guide to those who are looking for one that will suit their needs.

8 Great Alternative Desktop Managers For Linux Various UNIX / Linux desktop managers (personally I'm big fan of both Gnome and Fluxbox), from the post:

For many individuals collection managers are an important type of software. It is human nature to collect objects, in part because people derive pleasure from the simple ownership of objects. The things that we collect change over time, partly as a result of technological improvements, and partly because our wants and desires do not remain static.

Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists. It grew out of a frustration that most task managers do not provide facilities for composite tasks. Often, tasks and other things todo consist of several activities. Task Coach is designed to deal with composite tasks. In addition, it offers effort tracking, categories, and notes.