Question

which provide information about buddha sanghas

Answer 1

There are many Buddha Sanghas in the world. There are a lot of people who believe in Buddhism and dhamma preached by Lord Buddha. The dhamma is practiced and propagated by Buddhist monks. 

A lot of internet web sites are there to give information related to buddha sanghas. Cyber Temples give this information.  One such example is www dot buddhist dot com.  This is one of the largest online portals for Buddhists. 

There is an International Mahayana Institute and there is a site www dot fpmt dot org. 

Check these .