1)   Telepati SIP Phone Freeware 1.5 Telepati SIP Phone Freeware allows you to make PC-PC phone-phone calls over the Internet. Developed using Research Labs VOIP SIP Phone SDK, this free soft phone brings SIP protocol support for ActiveX. Tested and works with 75% of the providers. 2)   SIP Phone DLL 1.3 SIP Phone DLL - A powerful and highly versatile VoIP SDK. Our SIP Phone DLL provides a powerful and highly versatile solution to add quickly SIP (Session Initiation Protocol) based dial and receive phone calls features in your software applications. 3)   Embedded VOIP SIP Developers Kit 1.0 Embedded Windows CE VOIP Developers Kit is your embedded telephony solution for developing software/hardware to enable device to device phone calls using SIP/H323 phone right at the electronics level.