Google Talk
2005-2013
Google Talk was fully discontinued on June 26, 2017.
Google Hangouts
2013-2014
After the 2013 Google I/O Keynote, Google Talk was replaced with Google Hangouts.
2014-present
This logo was released coinciding with Android Lollipop's release.
2015-present (Text logo)
This logo was introduced with the new Google logo in 2015.