CRTMPServer is free software as defined by the Free Software Foundation and is licensed under the GNU General Public License Version 3 for open-source applications.

All modifications, enhancements and additions to the CRTMPServer are automatically bound the GPL v3 and therefore must remain open-source. Using the CRMTPServer to create a closed-source applications is prohibited.

EvoStream provides commercial licenses for CRTMPServer and offers the EvoStream Media Server. The EvoStream Media Server (EMS) extends the wonderful capabilities of the CRTMPServer to include support for:

  • HTTP Live Streaming
  • HTTP Dynamic Streaming

The EMS includes full Windows Support, intra-machine clustering and much more.

To learn more about EvoStream please see our website ( or contact us at