**Supergu** - A combination of Digg and bookmarks (PHP)
Official website: http://www.supergu.com/
Demo: http://www.getgui.com/
From the demo, it seems to have powerful features, but no official version has been released yet for show.
**Wodig** - An open-source Digg-like program in China (ASP)
Official website: http://www.wodig.com/
Demo: http://www.fenju.com.cn/fun/
It’s an open-source model with Chinese characteristics—half-open, not fully open. Although I use its program, I don’t feel any gratitude at all. If I ask a question, they ignore me. No plugins, everything is developed internally, and they consider themselves very capable!
**163ask** - Free and open-source Q&A software (PHP)
Official website: http://www.ngosoft.net/forum-11-1.html
Demo: http://www.163ask.com/
I haven’t used it, so I don’t know how it performs. There’s also an ASP version, you can search for it yourself.
**Hoodongwiki** - Chinese open-source wiki system (PHP)
Official website: http://www.hoodong.com/
Demo: http://kaiyuan.hoodong.com/index.php
After using it, you might be very disappointed. The open-source version differs significantly from the main Hoodong site. However, I believe it will continue to improve, so let’s look forward to it! A wiki represents collective wisdom and truly embodies the spirit of freedom and openness on the internet. I’ve heard there are also enterprise-level applications. Profit-driven?
There are many other open-source wiki products as well. For reference:
http://www.wikimatrix.org/ (English)
http://www.allwiki.com/wiki/wiki程序 (Chinese)