Tools to manage semantic webs

Question

I've seen a lot frameworks to create a semantic web (or rather the model below it). What tools are there to create a small semantic web or repository on the desktop, for example for personal information management.

Please include information how easy these are to use for a casual user, (in contrast to someone who has worked in this area for years). So I'd like to hear which tools can create a repository without a lot of types and where you can type the nodes later, as you learn about your problem domain.

Answer 1

Chandler is a "a notebook you can organize, back up and share!" It seems to be pretty simple to use.

OS: Windows, Mac, Linux

Answer 2

Extensive list of semantic web tools

Also check out Protege

Answer 3

For personal semantic information management on the desktop there is NEPOMUK. There are two versions, one embedded in kde4, this lets you tag, rate and comment things such as files, folders, pictures, mp3s, etc. on the desktop across all applications. Another version is written in Java and is OS independent, this is more of a research prototype. It has more features, but is overall less stable.

For KDE-Nepomuk see http://nepomuk.kde.org/ For Java-Nepomuk see http://dev.nepomuk.semanticdesktop.org/ and http://dev.nepomuk.semanticdesktop.org/download/ for downloads (the DFKI version is better)