Sezam BBS was founded on November 11, 1989 as one of many one phone line / night only Bulletin Board Systems in Belgrade, Yugoslavia. Contrary to many BBS systems dedicated to file download, Sezam focused on conferences. The original BBS software, specially developed by Sezam's founders, Zoran Životić and Dejan Ristanović, enabled users to share their comments on various topics, such as: computers, education, sports, politics etc.
Within months Sezam had several thousand users and evolved into a subscription-based system, using 3 phone lines. During the following years it grew to 6, 8, 10 and finally 15 phone lines. Tens of thousand users from former Yugoslavia used Sezam to communicate and exchange opinions on various subjects. During the media blockade imposed by Milosevic's regime, Sezam was one of very few free media in Serbia.
In 1995 Sezam BBS evolved to SezamPro and become the influential Internet providing system in Serbia. Old BBS system, with more than million messages in the database, still exists (telnet telnet.sezampro.rs) as the monument to the stormy 1990s in Yugoslavia.