Free School Administration Software - Open source

"SchoolTool" is free administrative software's 4 schools  and around the world. The goal of the project are to create a simple turn key student information systems for Schools, as well as and framework for building customized application and also configuration for individual schools. 

It is a personal review about this SchoolTool, I was looking for such kind of one and found, I have installed this in one school and it is working fine no trouble. No issues so far. The link is below. Only problem it will not run (support) in Windows platform.

http:///book.schooltool.org/htmlhelp//