http://gmail.com
Google Mail. 8 GB for free. Unbeatable spam-filter. Unbeatable conversation-threading and everything. Unbeatable fast search in your ten thousands of emails. Unbeatable feeding the Big GOogle with your data and make them f*cking rich. Use it offline with Google Gears. Gmail even has a task tool.
http://http://vue.tufts.edu/
Visual Understanding Environment is "not a mindmapping"-Tool. Great approach, check it out! VUE is a hybrid of mindmapping, database and presentation tool. Unfortunately, it's opensource, but has obviously not many developers.
http://www.rememberthemilk.com/services/gmail/
Used it together with Gmail. As I obviously hate ToDo-Lists and Gmail now has its own, I don't use RTM anymore.
http://www.diigo.com
Social Annotation: Seamless Integration of Social Bookmarking, Web Highlighter, Sticky-Notes. LISTEN: Diigo can send every link to your delicious-Account. Use Diigo for collaboration of special purposes, delicious as your backup and general bookmark bin.
http://friendfeed.com
FriendFeed. Sophisticated aggregation of everything streamable (rss), which sums up to like nearly everything you get on the web.
http://feedly.com
feedly is a magazine-like start page. I don't care for this, to be honest. Install the Plugin in Firefox and it will display related items from your personal Friendfeed-Stream. It's a revolutionary way of collaborative realtime web annotation!
http://twitter.com
Twitter: NOT just about "What are you doing?", but the most valuable ressource for information and news - if you know whom to follow. Advice: twittersearch (see below) your relevant topic, look who's posting important themes first. Follow these users and don't forget to check their followees (i.e. their information resources).
http://tweetdeck.com
TweetDeck is a twitter client which lets you build groups and sort them into columns. One for your favourite twitters, one for friends, one for colleagues, one for your important search terms - whatever.
http://www.zotero.com
Zotero: The Next-Generation Research Tool. Could well become a universal information repository, plus a bibliography database. Saves web pages to your computer, too.
http://etherpad.com
Etherpad: Collaborative Writing - instantly. Very useful for courses. Let them brainstorm collectively, copy the text and create a beautiful worlde cloud (see blow) instantly, visualizing the contents of your students' minds.
http://docs.google.com
I use this mainly to share and colaborate on short texts or outlines with colleagues.
http://collectivex.com
CollectiveX - Create a Groupsite for sharing and keeping your group connected!
http://desktop.google.com/
Search your computer as easily as you search the web with Google. BEWARE: THIS WILL TURN YOU INTO A CYBORG. Your notebook will serve as a part of your brain, because you'll find (nearly) everything within seconds.
http://www.launchy.net/
Launchy: The Open Source Keystroke Launcher for Windows. Never use your mouse to start an app again.
http://laterloop.com
LaterLoop: Read Webpages Later on Your Phone or Anywhere. (Or laterloop them and never look them up again, as I use to.)
https://addons.mozilla.org/de/firefox/addon/2324
Just like LaterLoop. Have twenty very important tabs opened in Firefox which keep you from doing your work? Save them for later.
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