softphone

TekPhone is a Windows-based SIP VoIP softphone that offers user agent functionalities per RFC 3261.

Express Talk allows users to make free calls from their PC using SIP voip softphones. It functions like a telephone and is compatible with other Express Talk users.

Express Talk is a PC-based software that simulates telephone functions to enable users to make free calls to anyone on the internet who has installed Express Talk or any other SIP voip softphone.

This softphone software offers secure communication protocols such as TLS, SRTP, and ZRTP, as well as HD codecs and IPv6 support. It also allows users to import Google Contacts for ease of communication.

This Mac OS X software offers a user-friendly internet phone experience with VoIP for clear voice quality. Its sleek interface, easy configuration, OS X address book integration, and Growl notifications make it an attractive option.

This software enables free PC-to-PC and low-cost PC-to-phone/fax calls using the internet or telephone networks. It transforms the computer into a versatile communication tool, acting as a VoIP/SIP phone, ISDN phone/fax, voicemail, SIP server/registrar, VoIP switch/PBX, etc. It also supports USB phone/headset.

ZOIPER Communicator is a reliable software for SIP calling that offers chat, video, and fax options. It is user-friendly with a small file size, skin options, and encryption support.

ZOIPER 2.0 Free Edition is a user-friendly softphone supporting IAX and SIP protocols. It is compatible with Asterisk and other IAX or SIP systems. Enjoy the benefits of this free product from Attractel!