*''08/2017'': SymbOS release 3.0 is out
*''12/2021'': SymbOS release 3.1 is out
*''02/2025'': SymbOS release 4.0 is out
<br>
*[http://www.symbos.de SymbOS homepage]
*[http://memberswww.homesymbos.nlde/evanzantendownload/msxorg20250131-V40/SymbOS%203%20install%20user%20and%20install%20guide-40-Manual.pdf SymbOS installation configuration manual (PDF)]
*[http://groups.yahoo.com/group/symbos8bit SymbOS mailing list (new)]
*[http://en.wikipedia.org/wiki/SymbOS english Wikipedia article]