Plugin Check for Everyone - Mozilla Security Blog

What’s New

We believe that plugin safety is an issue for the web as a whole, so while our initial efforts focused on building a page that would work for Firefox users, the team has since expanded plugin check coverage to work with Safari 4, Chrome 4, and Opera 10.5. We have added support for Internet Explorer 7 and 8 for the most popular plugins, as well, but since IE requires specific code to be written for each plugin it will take us a little longer to get to full coverage. You can see the updated page for yourself here.

まだ英語のおねいさんだけなのね。
関連
Firefox プラグインチェック(日本語版)で Shockwave Player 11.5.6.606 が古いバージョンと表示される - 取締役 平社員 ブログ (ベータ版)
http://d.hatena.ne.jp/noushibou/20100324/1269437015