Best of dot net softphone at KeyOptimize(Out of 2.87 Million in result | Last check 15 November 2017)
Asterisk Guru - Tutorials and howto's for the asterisk PBX and voip in general
Asterisk Guru Website
Ozeki C# SIP Stack - Ozeki VoIP SIP SDK Home Page
voip sip software for .net developers! this is the home page of ozeki voip sip sdk. this is the best place to start if you are going to develop such voip sip phone applications as softphone, pbx, webphone, ivr, call center, mobile sip clients, etc.
.NET Tutorials for Beginners and Intermediate level software professionals - DotNetFunda.com
DotNetFunda.com is a popular online tutorials and guide for latest Microsoft® technologies aimed for beginners and intermediate level professionals.
C# Corner - A Social Community of Developers and Programmers
Community for Developers and IT Professionals
MicroSIP - lightweight VoIP SIP softphone for Windows - Official Homepage
MicroSIP is a portable SIP softphone based on the PJSIP stack available for Microsoft Windows operating systems. It facilitates high quality VoIP calls (p2p or on regular telephones) based on the open SIP protocol.
CodeProject - For those who code
Free source code and tutorials for Software developers and Architects.; Updated: 15 Jun 2017
IT Best Practices, How-tos, Product Reviews, discussions, articles for IT Professionals in small and medium businesses
Wrox Programmer Forums
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Windows PC Software - Free Downloads and Reviews
CNET Download.com is your best guide to find free downloads of safe, trusted, and secure Windows software, utilities, and games.
DaniWeb IT Discussion Community
An online discussion community of IT professionals. Forums to get free computer help and support. We are a social technology publication covering all aspects of tech support, programming, web development and Internet marketing.
Stack Overflow - Where Developers Learn, Share, & Build Careers
Stack Overflow is the largest, most trusted online community for developers to learn, share their programming knowledge, and build their careers.
SourceForge - Download, Develop and Publish Free Open Source Software
Free, secure and fast downloads from the largest Open Source applications and software directory - SourceForge.net
How to develop an autodialer / predictive dialer in C# - Home
In this project Ozeki VoIP SIP SDK - and its background support - was used to create the autodialer. Background An autodialer is a software that automatically dials telephone numbers, and once a call has been answered, the autodialer either plays a rec...
Learn to Develop with Microsoft Developer Network | MSDN
Find the latest resources for developers. On Microsoft Developer Network, you can learn to build apps for the web, Windows Phone, and Xbox.
Voice Operator Panel : Professional SIP softphone for operators and receptionists, software switc...Advoiceoperatorpanel.com
VaxVoIP SIP SDK - Develop SIP Softphone, webphone, video conferencing, audio conferencing, SIP Se...Advaxvoip.com