Internal Links
Sacramento PHP Group
A PHP users group for the Sacramento area.
Software Related External Links
Paul Graham
A very useful site that includes a long list of essays on technology and business topics, written by someone that was there when the internet was first taking hold. The same person also wrote the book Hackers & Painters. Most of the articles from that book can be read for free on his website.
Joel on Software
This site is similar to Paul Graham's, but with different and equally interesting perspectives. The same person also wrote "Smart and Gets Things Done", a book on hiring information workers. Again, lots of good business and technology perspectives.
Paul Buchheit
Even more perspectives on technology and business. You can never get enough, in my opinion, as long as the people are knowledgeable. Paul created Gmail and AdSense, and founded FriendFeed.
The Business of Software Blog
I just found this recently. It seems to have some interesting posts.
Stack Overflow
A very useful programming question and answer site.
DocType
A very useful web design question and answer site.
Startups.com
Like the two above, but for business questions.
Fotolia and iStockPhoto
Stock graphics for web development and other purposes.
Open Source Web Design
A site to download free web design templates and share yours with others.
Elance
A freelance marketplace for many kinds of skills, including web development and graphic design. Be careful about the quality you're paying for. It does have a very nice escrow service though.
Slashdot
Sometimes software related, almost always tech related news.
Sam on Software
Software related discussion.
Dennis Forbes on Software and Technology
A new one I just found.
Non-Software External Links
The Writing of L.R. Sheldon
The original writing of L.R. Sheldon, a friend of mine and very good writer. Check it out.
The LifeStar Institute, The Methuselah Foundation, and The SENS Foundation
Organizations working to fight age related diseases and the aging process in general.
NanoRex
A promising nanotechnology company with designs for some very complicated molecular machines that unfortunately can't be built yet, but soon.
What Matters
Nanotechnology, robotics, and other high tech news.
E-Drexler and Metamodern
Eric Drexler's blogs.
Charlie's Diary
The blog of Charles Stross, author of Accelerando and other Singularity related books.
Ray Kurzweil's Site
The personal site of Ray Kurzweil, author of The Singularity is Near and others.
Armadillo Aerospace and SpaceX
Private space technology companies.
International Space Fellowship
An international news and information network dedicated to the development of the alternative/new space industry.
The Foresight Institute
From the Foresight Institute website: "Foresight Institute is a leading think tank and public interest organization focused on transformative future technologies."
DIY Bio
Do it yourself biology. Cheap research and biology related products. The Homebrew Computer Club of the 21st century?
Kickstarter
Fund or get funded to do interesting projects.