TeamCity Notifier

DomainUserAgent

This extension changes the UserAgent sent by your browser on a per-domain base. You can set up a different UserAgent for a specific domain, but still use the default one otherwise.

Rating: Total number of ratings: 8

.no { CSS }

Opera 12 reminiscent Shift-G CSS zapper (use Alt-G)

Rating: Total number of ratings: 7

Web Developer

Adds a toolbar button with various web developer tools. The official port of the Web Developer extension for Firefox.

Rating: Total number of ratings: 88

SEO-tools

Rating: Total number of ratings: 7

ChroPath for Opera

AutonomIQ offers a developers platform ChroPath to generate and validate unique selectors like relative xpath with iframe support

Rating: Total number of ratings: 5