Microsoft Office

Microsoft Office 95 (1995–1997)
Support has ended in December 31, 2001, alongside with Windows 95.

Microsoft Office 97 (1997–2000)
Support has ended in February 28, 2002.

Microsoft Office 2000 (1999–2001)
Support has ended in July 14, 2009.

Microsoft Office XP (2001–2003)
Support has ended in July 12, 2011.

Microsoft Office 2003 (2003–2007)
In 2003, the assembled Puzzle pieces were replaced with a new logo that displayed 4 squares.

This logo, along with the Windows logo in Vista and 7 and the 2000 MSN logo still appears in the Microsoft Update page in Vista, albeit without the "2003" designation.

Support has ended in April 8, 2014, alongside with Windows XP.

Microsoft Office 2007 (2007–2010)
The font-type on the word "Office" is no longer bold.

Support has ended in October 10, 2017.

Microsoft Office 2010 (2010–2013)
The logo used yellow-orange instead of red, blue, yellow, and green.

Support will end until October 13, 2020.

Microsoft Office 2013/2016 (2012/2015-present)
With the rise of Office 2013, the logo was changed to match the new modern design language. This logo was originally revealed in June 2012. The word ¨Microsoft¨ is removed from the logo but it is still known as Microsoft Office. This is used on future Office releases from this period on. Also, if you look closer, it actually reveals an O instead of just a box, just like what Bing has: an abstract lowercase B.

Office 2013: Support will end until April 11, 2023

Office 2016: Support will end until October 14, 2025!

Beta (Late 2002–Early 2003; 11.0.4523.4)
Was used in Office 2003 beta 1 version 11.0.4523.4 (at that time called simply "Office 11"), mainly in the installer. Other parts of the interface used the previous logo.