• Blink Cocoa

    A state of the art, easy to use SIP client for MacOSX. Blink comes in two flavors Blink Lite and Blink Pro both available in the Mac App Store.

  • Blink Qt

    A state of the art, easy to use SIP client for Windows and Linux. This wiki page is meant for providing access to the version control source code repository. For up to date information please visit the official web site

  • Documentation

    This projects holds documentation for AG Projects products and services.


    SIP SIMPLE client SDK is a Software Development Kit for easy development of SIP multimedia end-points with features beyond VoIP like Session based Instant Messaging, File Transfers, Desktop Sharing and Presence. Other media types can be easily added by using an extensible high-level API. The SDK consists of several low-level components, Unix command line clients, a GUI client (Blink) and a server application (SylkServer)....

    • python-eventlib

      Eventlet is a networking library written in Python. It achieves high scalability by using non-blocking io while at the same time retaining high programmer usability by using coroutines to make the non-blocking io operations appear blocking at the source code level....

    • Python-msrplib

      This library implements Message Session Relay Protocol (MSRP). MSRP is defined in RFC 4975. The relay extension that can be used for NAT traversal purposes is defined in RFC 4976.

    • Python-xcaplib

      This library implements the client side of XCAP protocol, defined in RFC 4825. XCAP allows a client to read, write, and modify application configuration data stored in XML format on a server. An XCAP server used by XCAP clients to store data like presence policy in combination with a SIP Presence server that supports PUBLISH/SUBSCRIBE/NOTIFY SIP methods....

    • SIP Clients

      To test SIP SIMPLE client SDK (, a set of command line tools are provided by this package for setting up Audio, Instant Messaging (IM) and File Transfer sessions, Publish and Subscribe for presence or other events.


    SIP2SIP is a real time communications service for Audio, Video, Presence, Chat, File Transfer and multiparty conferencing based on SIP signaling and related media protocols (RTP, MSRP and XCAP). The service is free to use based on a fair-use policy and federates with external SIP and XMPP domains. ...

  • SylkServer

    SylkServer allows creation and delivery of rich multimedia applications accessed by SIP User Agents and XMPP endpoints. The server supports SIP and XMPP signaling, RTP and MSRP media planes, has built in capabilities for creating ad-hoc multimedia conferences with HD Audio, IM and File Transfer and can be easily extended with other applications by using Python language....

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