| Blink | |
|---|---|
|   | |
|   | |
| Developer(s) | AG Projects | 
| Initial release | December 1, 2009 | 
| Stable release | |
| Repository | https://github.com/AGProjects/blink-qt | 
| Written in | Python | 
| Operating system | macOS, Microsoft Windows and Linux | 
| Size | 30M Cocoa version 20M Qt version  | 
| Available in | English | 
| License | Blink License (free software versions + Shareware versions) [4] | 
| Website |  icanblink | 
Blink is a Session Initiation Protocol (SIP) client distributed under the Blink license (GNU GPLv3 with an exception to permit the inclusion of commercial proprietary modules). [4] [5]
The software is written in Python for macOS's Cocoa, with a later port to Qt for supporting Microsoft Windows, Linux, AmigaOS. [6] [7]
Blink is based on the Session Initiation Protocol, and beyond voice over IP, its features also include video, instant messaging, file transfer and multi-party conferencing sessions based on MSRP protocol, remote desktop sharing using RFB protocol (VNC), and SIMPLE presence using XCAP protocol. Compatible with Asterisk. [8]
According to Jason Hibbets, an Advisor at Red Hat, Blink is a popular alternative to Skype [9]
The Linux and macOS version of Blink implement OTR protocol end-to-end encryption and peer verification for chat media. [6] [10] All versions provide audio and video media encryption using ZRTP.