Here are link to some Open Universities in Southeast Asian:

Universitas Terbuka (UT) The Indonesian Open Learning University, Tangerang

University of the Philippines Open University (UPOU) Los Banos

Sukhothai Thammathirat Open University (STOU), Bangkok,Thailand

Hanoi Open University (HOU), Hanoi, Vietnam

Ho Chi Minh Open University , Ho Chi Minh, Vietnam