This is a debian-user question. Learn to use 'apt-cache search' -- there must be at least a hundred packages in Debian for what you describe, from note taking to mind mappming to personal wikis.
Don't abuse debian-science because you think of yourself as a scientist. Dirk -- Three out of two people have difficulties with fractions. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]