"What version of Sitecore is this on again?"
This extension runs through two checks:
1) Is the site using Sitecore?
2) Which version of Sitecore is it running on?
If a Sitecore version is detected, it will display the full revision and update name and link to its respective http://sdn.sitecore.net or http://doc.sitecore.net version page.
Also, the mainstream support end date displays below the version with a link to the Sitecore Product Lifecycle page.
Note: While this may often determine versions for live Sitecore sites (especially older versions of Sitecore), not all environments provide the means to determine the version of Sitecore it runs on as an end-user.
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!