Below you will find descriptions and links to SIP and RTP stacks, applications, test utilities, SIP proxies, SIP PBXs and STUN server and clients. Most of them are open source , but not all of them

If you have any comments please feel free to contact me: –> klaus.darilion at pernau.at <–

There are also other VoIP related portals and link collections.

Note: I mainly searched for C/C++ stacks and applications. There also exist a lot of stacks and applications for other programming languages, especially for java. If you are looking for Java stacks/applications, please ask Google (search for: NIST java jain).

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The Top 10
These are the VoIP blogs that almost everyone in the idustry reads on a daily basis. I read each of these blogs daily. The content on these sites is outstanding and serves as the origin of some of the hottest industry chatter. If you are in the VoIP industry and you are not reading these blogs, you are not doing yourself or your company justice.

Andy Abramson – VoIP Watch
Om Malik – GigaOm
Rich Tehrani’s Blog
Jon Arnold’s Blog
Greg Gatlitzine’s VoIP Authority Blog
Skype Journal
Russell Shaw’s IP Telephony Blog
Tom Keating’s VoIP and Gadgets Blog
Jeff Pulver – Pulver Blog
Mark Evans Blog

The Prominent
These are the VoIP blogs that you might not read everyday, but you definitely should read them every week. Most of the blogs speak to a specific niche of the industry or, cover more then just the Voice Over IP industry. These blogs often contain high level and or are extremely technical so many of the VoIP blogs are not for the faint at heart.

Asterisk VoIP News
Alec Saunders Log
Martin Geddes -Telepocalypse
Ted Wallingford’s Signal to Noise
Erik Lagerway – SIP That
Brough Turner
Skype Blogs
Aswath’s Weblog
Phone Boy
David Beckemeyer Mr. Blog

Always Worth a Read
These last ten VoIP blogs are typically focused on reporting about the happenings in and around the VoIP industry. Many of these blogs have a huge amount of valuable content and a extremely active community of individuals commenting on the topics and news presented. Though these are not daily or sometimes weekly reads, these should be in your feed reader.

Ken Camp’s Realtime VoIP
Solomon’s Ige VoIP Blog
Gary Kim’s Blog
Mark’s VoIP Security Blog
Irwin Lazar’s Real-Time Blog
VoIP Supply Blog
VoIP Now
VoIP Low Down
VoIP Central
VoIP Loop

Now it comes time to hear about who I missed – Let me know if I missed your VoIP blog or your favortie VoIP blog. I would be happy to add to this VoIP blog list!