<HTML><BODY>In our more old clusters we used PBS and SGE as batch systems to run quantum-chemical applications. Now there are also commercial versions PBS Pro and Oracle Grid Engine, and other commercial batch management programs. But we are based on free open-source batch management systems.<br>Which free (and potentially free in a few years) batch systems you recommend ?<br><br>Mikhail Kuzminsky<br>Zelinsky Institute of Organic Chemistry RAS<br>Moscow<br><br><br><br><br>Mikhail Kuzminsky</BODY></HTML>