VoIP H.323 SDK - A powerful and highly versatile VoIP SDK to accelerate development of H.323 applications and websites Our brand-new VoIP H.323 SDK provides a powerful and highly versatile solution to add quickly H.323 based dial and receive phone calls features in your software applications. It accelerates the development of H.323 compliant soft phone with a fully-customizable user interface and brand name.

• License: Commercial
• Language: English, German
• Release: 2008-04-03
• Size: 7 Mb
• Cost: 1499.00 $

Being one of the best video conference software solutions in the industry, ZoneVideo conference provides users with a multi-level, highly effective online multimedia communication platform that has powerful application functions, stable and outstanding system performance. With this platform, users can exchange all types of information, e.g. audio, video, desktop, files etc.

• License: Shareware
• Language: English
• Release: 2008-01-17
• Size: 5 Mb
• Cost: 399.00 $

TERAVoice is a high-performance telephony platform for Windows that can implement any type of telephony application like voicemail, automated attendants, voice menus, waiting queues for call centers and custom IVR applications. TERAVoice can also act as a VoIP (Voice over IP) gateway for bridging calls from PSTN to H.323 terminals and computers for inbound and outbound calls.

• License: Freeware
• Language: English, German
• Release: 2004-12-27
• Size: 82 Mb
• Cost: Free

Make voice calls from any PC in the world. Free voice connectivity with Internet users. RinGo allows you to make calls from any place in the world from your PC without the use of PSTN for local and international calls. Instead of a regular phone you may use your PC equipped with headset and Internet-connection instead of regular telephone line.

• License: Freeware
• Language: English, Russian
• Release: 2005-07-21
• Size: 1 Mb
• Cost: Free