In addition to the well-known 3DNA homepage at URL
http://x3dna.org, I've recently duplicated its contents to an alternative site at
http://home.x3dna.org. Hosted at Columbia University, the alternative homepage is accessible from countries like mainland China.
Over the years, I've heard of many times from
potential 3DNA users in China who cannot visit http://x3dna.org which is on a
shared host. Now
http://home.x3dna.org, the 3DNA Forum (
http://forum.x3dna.org), and a few other 3DNA/DSSR-related web services are all hosted on dedicated servers under my desk. They should be universally reachable.
Web-based technologies (on both the server and client sides) are now matured enough to make writing web applications enjoyable. The infrastructure in place makes it feasible to add more web-based functionality. Moreover, existing web services will be consolidated and refined to ensure sustainability and wide accessibility of 3DNA.
Xiang-Jun