Blink is the best real-time communications client using the SIP protocol.
You can use it with many SIP providers, on the LAN using Bonjour and with SIP2SIP, a free service.


Elegant, simple to use and feature-full


Available for Windows and Linux and on the Mac App Store for OSX

appstore

Get the addressbook plugin for OSX


Mobile Versions

Blink for Mobile is available for iOS, this version only works with SIP2SIP.

appstore

Features

Voice and Video

  • Studio Audio Quality (Opus codec)
  • HD Video (H.264 codec)
  • Acoustic Echo Cancellation
  • End-to-end Encryption (ZRTP)

IM & Presence

  • Chat Sessions (MSRP)
  • End-to-end Encryption (OTR)
  • Presence (SIMPLE)
  • Server Storage (XCAP)

File Transfers

  • File Sessions (MSRP)
  • Encryption (TLS)
  • Progress Reports
  • Delivery Confirmation

Screen Sharing

  • Help Family Remotely
  • Collaboration at Work
  • Surf Internet Together
  • Integrated with Audio

Conferencing

  • Manage Participants
  • VoIP, IM and Presence
  • File Transfers
  • Screen Sharing