PortSIP Solutions; Inc. - Pangolin is the newest free softphone from PortSIP; it's built base on PortSIP VoIP SDK; allowing users to enjoy multimedia communications in a dynamic way.

iSwitch - Profesional service of development and test of SIP servlet applications in particular; and server side VoIP applications using SIP in general; and the J2ME client when required.

Veraz Networks - The compact; highly reliable I-Gate 4000 EDGE SIP Gateway offers enterprise PBX and PSTN switch interconnection while reducing required bandwidth and routing resource expenses for toll-quality voice.

MizuTech - Mizu VOIP Server -high speed SIP server running on Windows / MS SQL platform

Mega - We also support Nokia SIP; you’ll be able to phone over the internet with a Wi-Fi or 3G connection for incredible low rate with Mega account. The SIP VoIP Settings application in Nokia

Telecommunication Software Inc. - SAMwin.CCO is the new SIP based attendant console directory and call center solution that integrates with platforms such as Microsoft’s Outlook & Microsofts OCS.

IP PBX Support - IP PBX Support offers many SIP based IP PBX telephone systems. IP SIP based phone systems include Talkswitch; Allworx; Epygi; Asterisk; Grandstream; Aastra; Sutus; Zultys. We offer full support too.

Abbatel - A global service provider gives oppurtunity to make calls from any where to any where. We are wholesaler of DID and termination; too. And we have program for those who want start business in SIP; VoIP

Audmaster - Audmaster is a Web based Telco service that gives users access to Internet Telephony and related applications at extremely low prices while ensuring good quality of service! Uses SIP/IAX2 protocols.

Checkbox - SIP Voip Carrier; SIP Virtual Contact center; SIP broadcast; 1 to all USA and Canada exellent A-Z rates.

Sun Microsystems - Sun GlassFish Communications Server is the only commercial Java EE + (JSR 289) SIP server developed in the open-source (Project SailFin). Learn about SailFin and partner solutions at our website.

SIPCarrier - SIP termination provider offering FREE full featured reseller platform. Create and control pre-paid and postpaid accounts (calling card PINs) through our fully hosted solution.

Hadi Telecom - SIP: FIT BOX is an exciting State-of-the-art telephony solution for business which is built on an IP based network. FIT BOX system consists of IP Phones; FIT BOX Server & VoIP Gateway.