robmiller

wp-expurgate looks for HTTP links on your HTTPS site and converts them to HTTPS by running them through a proxy — so every connection between your site and your users is still encrypted.

wp-expurgate

Run your blog on SSL? Tired of seeing mixed content warnings if someone posts a non-HTTPS image on your blog? Problem solved!

Zach Schnackel

A handy utility plugin that provides support for media queries and emulating CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8. Uses <a href="https://github.com/keithclark/selectivizr" rel="nofollow ugc">Selectivizr</a> and <a href="https://github.com/scottjehl/Respond" rel="nofollow ugc">Respond.js</a>.
Uses conditional statements to only load these libraries in IE8 or older.

WP Fossil

Provides support for media queries and emulating CSS3 pseudo-classes and attribute selectors in Internet Explorer 6-8.

wp-expurgate vs WP Fossil