Up-to-date list of search engine bot user agents

[JoeAmadon]

Does anyone know of an up-to-date-list of search engine bot user agents?

Thanks.

[KeriMorgret]

I haven't found any list that's newer than a year old in the brief search I did. I did find these comprehensive user agent lists at http://www.botsvsbrowsers.com/ and http://www.user-agents.org/.

Are you more interested in every variation of bot there is, or more after the top 20 bots?

[JoeAmadon]

Thanks, Keri. I found http://www.botsvsbrowsers.com/ to be very helpful. I'm looking for all the bots from the "major", U.S. search engines (Google, Bing, Ask, AOL, Blekko).

[westernspirit]

We just found this, which may be helpful. It was exactly what I was looking for.

http://www.monperrus.net/martin/list+of+robot+user+agents