Improxy is an IGMP/MLD Proxy daemon written in c for Linux. It is lightweight and do not depend on any thirdparty library.

It support source filtering completely.

The improxy meets the requirements of the IGMP/MLD proxy standard (RFC 4605) IGMPv3(rfc 3376) MLDv2(rfc 3810) and has additional functionalities.
It support one upstream and multiple downstream.