Eng Vannak is a webmaster of a local organization http://www.tenbestreview.com and a leader of Mozilla Khmer Community. He has made the most famous browser ever Firefox available in Khmer language.
Besides technical works he also joins and organizes some social events like BarCamp Phnom Penh, Blogfest Asia 2012 and BarCamp Siemreap, builds an eco-library for rural kids and writes short articles/stories to promote gender equality.