- Wikipedia: Brekeke SIP Server
- Voip-info.org: About Brekeke SIP Server v2.x
- SIP center: http://www.sipcenter.com/sip.nsf/html/SIP+Servers
- SIP Forum: http://www.sipforum.org/content/view/356/193/
- SIP Dojo: http://www.sip-dojo.com/what-is-sip-server/why-brekeke-sip-server
