Features of the Opera web browser (English Wikipedia)

"Can't find save session option". Opera Forum. 20 June 2015. Retrieved 21 November 2015.
"Confusion with Opera Versions". Opera Forum. 6 October 2015. Retrieved 21 November 2015.
"Keep #extended-lazy-session-loading flag". Opera forums. 2017-05-16. Retrieved 2024-06-21.
"dont load inactive tabs". Opera forums. 2017-07-01. Retrieved 2024-06-21.

"Opera Turbo". Opera Software. Archived from the original on 30 June 2010. Retrieved 5 September 2010.
"Sync browsing data in the Opera browser | Opera".

operasoftware.com

Goldman, Daniel (2007-03-12). "Opera Skins will support animated GIF images". Opera Watch. Archived from the original on October 12, 2007. Retrieved 2007-10-17.

Kirk, Jeremy (2008-10-28). "Opera Beta Improves Syncin". PCWorld. Retrieved 2008-09-23.

"Opera 9.5 -- a fine browsing alternative". TechChuck.com. 2008-06-18. Retrieved 2008-09-23.

Gjøsund, Alexander. "Opera Turns After Criticism; Brings Back Bookmarks". TechiFreak. Retrieved 11 August 2013.

"Userscripts.org: Power-ups for your browser". userscripts.org. Archived from the original on 6 May 2014. Retrieved 12 January 2022.

"Download manager in Opera". Archived from the original on 2013-09-06. Retrieved 2013-08-19.
"Images management in Opera". Archived from the original on 2013-09-06. Retrieved 2013-08-19.
"Opera Turbo". Opera Software. Archived from the original on 30 June 2010. Retrieved 5 September 2010.
"Zooming in Opera". Archived from the original on 2014-03-01. Retrieved 2013-08-19.
""Is that my blog on your Speed Dial?" - Desktop Team - by Desktop Team". opera.com. Archived from the original on 2 March 2007.
Goldman, Daniel (2007-03-12). "Opera Skins will support animated GIF images". Opera Watch. Archived from the original on October 12, 2007. Retrieved 2007-10-17.
"First 9.60 Snapshot!". Archived from the original on 2008-08-25. Retrieved 2010-05-25.
"Userscripts.org: Power-ups for your browser". userscripts.org. Archived from the original on 6 May 2014. Retrieved 12 January 2022.
Teigene, Arnstein (24 April 2012). "Increased focus on Opera extensions and ending support for Unite applications and Widgets". Archived from the original on 26 April 2012. Retrieved 9 September 2012.