A state of the art, easy to use SIP client
Available for Mac, Windows and Linux

Changelog for Blink

Changelog for Blink Pro is available here

Changelog for Blink Qt is available here Blink Changelog

Version 0.24.1

May 20th, 2011

Many bug fixes in the middleware
Reduced overal package size
Update status of chat drawer when session has changed
Show onhold icon for p2p sessions in chat drawer
Added command-A shortcut for select all menu item
Added Command Z shortcut key for zoom/unzoom the UI
Simplified preferences panel
Remove Add to conference from button from search contacts view
Allow dragging contacts from search results view
End session if all streams were removed
Print connection failure reason in chat window
Added settings for disable Chat, FT and DS sessions

Version 0.24.0

March 24th, 2011

Added add/remove conference participants functionality
Fixed a memory allocation problem in chat sessions
Relax check on SDP origin to increase interoperability
Enable audio when start conference by default
Autofit subject width in alert panel
Added hold icon in participants drawer
Group conference history menu entries in one section
Fixed display name in audio tile when it is a sip uri
Create a random room if none provided
Fixed URL quoting not to process percent symbol
Replaced file storage of call history with a SQLite backend
Fixed exception when processing conference payload with Bonjour account
Fixed tooltip text in history viewer
Adjust history viewer's statusbar height and action button
Avoid processing iTunes pause notification more than once
Fixed history viewer toolbar items width on Leopard
Improved layout of history viewer status bar
Lowercase conference room
Un-minimize contact window for start session action
Do not take window focus in incoming session alert panel
Added action button for contextual menu in history viewer
Added contextual menu for contacts in history viewer
Added query database status label
Display the number of found contacts in the table header cell
Improved label for number of displayed history entries
Added begin/end pagination to history viewer
Fixed manual resizing limits of main window
Added dot to the pstn number matching pattern
Fixed log lines unicode encodings
Fixed printing failure reason for proposals
Added quick audio device switching
Render video file received using file transfer in chat window
Fixed alignment and improved labels in history viewer toolbar
Allow two characters long conference rooms
Fixed display name when starting session from conference participants drawer
Update header title of participants drawer
Do not reset date filter after purging history messages
Renamed media type file to file-transfer in history entries
Use last selection to Delete history entries
Detect last selected view in history table
Allow deletion of history entries based on date and media type
Update recording duration formatting
Do not mark failed-calls as un-delivered
Added voicemail server notifications to history
Separate missed calls from audio calls in history
Log voicemail recordings to history
Fixed replacing new line when text is html formatted
Improved rendering of audio calls logged to history
Improve rendering of file transfer history entry
Urlencode the file path and add to history when recording ended
Added audio recordings to history viewer
Added filter by date to history viewer
Fixed render private message line
Fixed selecting history messages when search contact
Add entries in history for all audio sessions
Fixed display of audio devices with unicode characters

Version 0.23.2

February 15th, 2011

Added Cmd-J short-key for Join conference
Changed Silent short-key to Cmd-S
Replace Cmd-A with Cmd-N short-key for add contact action
Allow add contact from search results to join conference window
Disable participants menu items for bonjour accounts
Moved Voicemail items from History to Call menu
Filter contacts by search text in History viewer
Filter contacts by media type in History viewer
Renamed menu Audio to Devices and Conference to Call
Reduce number of previous chat messages fetched from history
Fixed display of audio devices with unicode characters
Fixed unicode support in preferences
Refactored handling of unicode filenames on file transfer
Fixed saving and retrieving unicode data from history files
Fixed unicode support for unicode capable objects
Fixed handling utf-8 encoded display name in chat sessions
Removed chat history folder setting
Add both reason and failure_reason to BlinkSessionDidFail notification
Fixed TLS path, SIP proxy and MSRP relay options display in preferences
Fixed race condition when chat message is received and window is closed
Render the display name in chat Growl notifications
Fixed grouping history entries by account
Made sessions logging more consistent
Fixed exception when right clicking an empty area on history window
Fixed HTTPURL datatype in the preferences panel
Do not close drawer on window close to avoid transition artifacts
Fixed saving history entry for failed audio calls
Renamed Chat history to History viewer
Refresh the Contacts list of History viewer when a contact has changed
Log audio calls to chat history only if the contact exists
Handle exception when not a valid SIP URI in daily entries
Added filter by media popUp button on history toolbar
Added file transfer information to chat history
Fixed session duration formatting
Fixed logging rejected audio session and made statement more efficient
Added entries in chat history for audio calls
Update status when file transfer session failed during DNS lookup
Fixed exception when adding a contact to a folded group
Fixed service provider settings provisioning
Fixed stopping chat controller when DNS lookup fails
Fixed accouting for failed calls during DNS lookup
Print a generic message in chat view when MSRP chat stream failed
Refactored File Transfer to use sqlobject storage backend

Version 0.23.1

January 29th, 2011

Show successful file transfer status with blue color
Repaint transfer list after retry and fail as the height has changed
Fixed outging file transfer when filename contains utf-8 characters
Fixed alignment of file icon
Show file transfer checksum progress and abort status

Version 0.23.0

January 28th, 2011

Allow handling of utf-8 encoded display name for incoming sessions
Refactored File Transfer to correctly handle multiple parallel requests
Refactored Chat SMS and history for using SQLite database backend
Modified ChatInputTextView to insert newline on shift+enter
Fixed Chat datetime handling to be offset aware
Allow toggle of smileys in real time
Fixed a DNS lookup race condition
Fixed crash when receiving broken Request URI containing unquoted @
Implemented MSRP Chat keepalive mechanism
Do not move focus to SMS window when receiving is-composing
Show full name in Missed Call and Audio Recorded Growl notifications
Added Chat window drawer with participants and session information
Added support for conference servers
Added Audio, Hold, Record and Video buttons in Chat toolbar
Audio button toggles between Connect, Cancel, Hangup
Automatically switch audio when switching Chat session with audio
Fixed updating buttons state when switching or detaching tabs
Fixed updating buttons state after stream has been disconnected
Make Chat toolbar customizable by end-user
Fixed various exceptions when adding and removing streams
Fixed accounting of failed sessions
Added accounting for multi-party conferencing
Fixes in Answering machine
Do not display wrong packet loss information
Added elements for service provider co-branding
Improved DNS resolver capabilities
Bug fixes in Chat and SMS windows
Improved Bonjour discovery
Added placeholder for video sessions

Version 0.22.2

January 9th, 2011

Lookup Contact when listing audio recording directory in menu
Keep the chat drawer open after session has failed
Print system message in Chat view when media failed
Syncronized selected audio session in chat and audio drawer
Implemented contextual menu for conference participants
Moved Answering Machine to Status menu
Moved Audio Recording to History menu

Version 0.22.1

January 6th, 2011

Do not move focus to SMS window when receiving is-composing
Show full name in Missed Call and Audio Recorded Growl notifications
Added Chat window drawer with participants and session information
Added Audio, Hold, Record buttons in Chat toolbar
Audio button toggles between Connect, Cancel, Hangup
Use Chat message sent timestamp displayed in local timezone
Automatically switch audio when switching Chat session with audio
Fixed updating buttons state when switching or detaching tabs
Fixed updating buttons state after stream has been disconnected
Make toolbar customizable by end-user
Fixed various exceptions when adding and removing streams
Fixed accounting of failed sessions
Fixes in Answering machine
Do not display wrong packet loss information
Improved DNS resolver capabilities
Various bug fixes in Chat and SMS windows
Improved Bonjour discovery
Improved menu structure

Version 0.21.1

December 17th, 2010

Added new test URI for conference
Disable the Desktop Sharing icon for closed Chat sessions
Use contact preferred media when starting session from search view

Version 0.21.0

December 14th, 2010

Fixed URL regex not to include '<' or '>' in Chat window
Fixed exception with not yet started sessions
Do not display Add Contact panel for outgoing chat sessions
Fixed redial using original media combination
Fixed saving port and transport in call history for outgoing sessions
Fixed CPIM usage in SIP MESSAGE and simplified code
Fixed memory leaks about NSString allocations
Fixed comparison with port which is integer
Increased default answer delay for bonjour audio calls to 6 seconds
Do not attempt to end session that has not started yet because of DNS lookup failure
Fixed session state when DNS lookup fails
Display better status text when PJSIP fails with TLS connection error
Improved display of status in audio tile when DNS lookup fails
Fixed compiler warnings
Don't listen for VNC connections on IPv6
Refactored iTunes interface to use the new thread support from sipsimple
Made changes to Preferences thread safe (SIP Simple)
Fixed TLS transport initialization (SIP Simple)
Added DNS resolver autodetection capabilities (SIP Simple)
Fixed matching of media codecs on incoming calls (SIP Simple)

Version 0.20.9

December 3rd, 2010

Fixed logic for accepting new sessions of incoming proposals

Version 0.20.8

December 1st, 2010

Fixed an exception that caused Preferences window not to display
Fixed auto-accept Chat sessions from known contacts
Don't auto-answer Bonjour calls if audio sessions are in progress
Fixed retrieving icon in the Chat history window

Version 0.20.7

November 29th, 2010

Fixed exception when adding an Audio stream to a Chat session
Added option to auto-accept Audio calls from Bonjour accounts
Automatically accept File Transfers from Bonjour neighbours
Automatically accept Chat sessions from Bonjour neighbours
Disabled Reconnect button for Bonjour chat sessions
Fixed disconnect message in Chat window after re-INVITE
Enabled Delete function key to delete Chat history messages
Fixed detection of audio codecs without a rtpmap line in SDP
Fixed exception for MWI NOTIFY without a Message-Account body

Version 0.20.6

November 26th, 2010

Fixed exception when dropping a file on a contact in the search list
Skip call logging for Bonjour accounts and compact logging code
Save timestamp logged to Chat history file in UTC format
Fixed crash on incoming unhandled SUBSCRIBE
Fixed crash when Content-Type header is missing for MESSAGE
Automatically refuse session request that contains unsupported codecs
Fixed a race condition that caused session exceptions in some situations
Fixed crash in Chat history when deleting old messages
Fixed rendering of our own icon in previous Chat messages

Version 0.20.5

November 22nd, 2010

Improved replication of SMS messages between multiple Blink instances
Display the delivery status in Chat history window
Fixed detection of missing MSRP REPORT messages in Chat sessions
Show the local time when displaying Chat messages
Make SMS, Chat and History window content look the same
Fixed Bonjour discovery when changing Display Name and SIP transports

Version 0.20.4

November 10th, 2010

Fixed SMS and Chat rendering bug
Also validate the private key in the TLS certificate file
Added the Tools menu and moved several menu items to it

Version 0.20.3

November 9th, 2010

Added setting Account -> SIP -> Always Use My Proxy
Improved resilience during poor connectivity conditions
Check validity of TCP and TLS port in Preferences
Check validity of TLS certificates in Preferences
Allow only supported sample rates for the audio device in Preferences
Set MSRP Relay address setting default port to 2855 in Preferences
Removed obsolete TLS protocols from Preferences
Retry MWI Subscription in 3 hours in case of failure instead of stopping it
Do not route to unsupported transport returned from DNS lookup
Prefer the server advertised voicemail URI over the user setting
Fixed a random crash in the contact model
Fixed bugs in Bonjour Neighbourhood's discovery mechanism
Publish all supported SIP transports in Bonjour advertisement
Fixed overlapping buttons after collapsing the main interface
Fixed toggling of Silent setting while in a call
Fixed the file upload form element in the SIP settings page
Improved the display of failure reason for failed File Transfers
Disabled ICE by default, it causes reseting some SIP ALG routers
Disabled voice activation detection
Improved helper text in the main search box
Fixed RTP and SIP port boundry checks
Many bug fixes inherited from the latest SIP SIMPLE client SDK

Version 0.20.2

September 21st, 2010

Fixed accepting sessions that have SDP c line only within the media stream
Fixed logging history entries when the Display Name contains unicode
Fixed tab dettaching on SMS windows
Switch to new plugged-in device automatically when we have active calls
Enabled NAT Traversal use of ICE by default
Improved the icons of test contacts
Improved the shutdown mechanism

Version 0.20.1

September 14th, 2010

Fixed crash when using the same device for alert and voice
Fixed crash in picture aquisition panel when no video capture device is available
Added test contact for HD audio conferences conference@sip2sip.info
Fixed waiting timeout for engine shutdown
Fixed race condition when first NOTIFY for MWI arrives
End MWI subscription before ending registration
Added description used for accesibility for some GUI elements