You can either download and then import them into Sunbird or Lightning or you can just subscribe to these calendars by copying their URL and then adding them as new remote calendar files.
 

 Bastard Operator From Hell like Novell - only as Youtube Movies. Awesome ...
 

 This calculator will let you convert between various energy measurements with a few quick clicks of your mouse.

Easily convert to and from Joules, Btu, calories, electronvolt, erg, watt hour, therm, toe and tce energy measurements.
 

 Die hier gelisteten Kalenderdateien sind sowohl für die Einzelanwendung Sunbird als auch für die Kalender-Erweiterung (Lightning) für Thunderbird geeignet und liegen im iCal- bzw. ICS-Format, einem Standard zum Austausch von Kalenderinformationen, vor.
 

 German language website about mini-computers.
 

 Doodle helps finding suitable dates and times for group events, e.g., an appointment, a conference call, a family reunion, etc. Doodle is particularly easy to use - and passes the grandma-test.

In addition to scheduling events, Doodle also supports polls in general. That is, groups can conveniently decide on options other than dates.
 

 iFixit is the free repair manual that you can edit. We are a community of people helping each other fix stuff. Come hang out with us - you'll find a friendly, helpful bunch of people who care about things and want to make them last longer.
Actually - a very nice site that has manuals on how to fix any electronic device - and if it doesn't exist yet - you can write the docs yourself !
 

 Older versions of software / links. Sometimes, new versions are not the good ones. Having access to an older version can be the only way to make things work.