More resources:

• How to design a good flag
• Flag generator
• Creating Fantasy and Science Fiction Worlds
• Inkscape - A Guide to a Vector Drawing Program

Found more interesting world building links:

• Thud and Blunder: Article by Poul Anderson about worldbuilding.
• 3D-Starmaps is dedicated to star maps.
• Atomic Rockets contains a lot of information about real and fictional rocketships.

If you’re serious about world building, this one might be something for you: The California State University is/was offering a course in World Building. The course is offered both on-campus and as a distance learning course. It focuses on realistic, scientific world-building. I am not sure if the course is still actively offered; the Open University does not seem to list it. I’m actually interested in this course, but unfortunately the professor who taught it does not reply to email at the moment. A pity.

I’ve added a few links - and since I can’t really expect anyone to do a mental diff on the two link lists, I decided to quickly post what I’ve added since I initially started the link lists.

World Building Resources:

• Climatology for Worldbuilders
• Language Construction Kit
• A Way with Worlds

Worlds on the Web:

• Planetocopia
• Life on the Planet Furaha

Good news for everybody who likes “planetary” rings as much as I do. Cassini-Huygens seems to have detected rings around Saturn’s moon Rhea. Until now it was thought that only planets could have rings.