very nice extension. After testing other similar ones...i chose this one as it WORKS on all sites i tested (unlike the competition) and it does NOT slow down your firefox :) it has a great simple GUI. i give it 5 stars because...it really gets better with every update
BRAVO

Very handy, but no support. The "support" link just goes to the home page, and the FAQs do not address app support. The app will not export results, and I cannot find any information on why it would fail to save the file.

Stopped working 2 days ago! not showing anything.

Some seven year old technology is missing...

I love this extension usually, but like other users have noted it has become painfully slow in the last couple of versions. Don't know if this is due to updates of the extension itself or Firefox updates they need to adapt to, but now it is barely functional in its current state, I had to disable it.

Great extension but on Firefox this makes every page load way too slow. As soon as I disable this extension, network calls are fast again.

Useful for curious people, but terrible performances. It degrades network performances too much.

Like most people who use this, I'm a web developer and I noticed that it was making some requests on the app I'm working on take in excess of 10 seconds.

Older versions were ok. Newer versions just hog the browser. There are much better addons to provide wappalyzer's functionality.

Great module, however, for some time, it has been slowing down some websites. For example, youtube can take up to 20s to load (on a powerful mac).