The following is a (incomplete as usual) list of companies or individuals who have contributed to OpenR2 with sponsorship and/or donations.

Neocenter - Donated the first Sangoma board to develop and test openr2 and signaling in telecommunications network book. 
            Special thanks to Octavio, Pop and Alejandro Apan.

Cuallisoft (Camaleon Firewall) - Donated the first server ever where openr2 was developed and tested.

Sangoma Technologies - First company providing significant moral and financial contribution to the project. Thanks Doug :-)

Digium (Thanks to Mark Spencer for the boards) - Donated Digium boards to test openr2 and for creating Asterisk and 
                                                 allowing my code to be part of Asterisk.

Telecomunicaciones Abiertas de Mexico (Thanks to Carlos Chavez) - Sponsored development and maintenance of the code.

e-contact - Sponsored the development of DTMF R2.

