Take the 2-minute tour ×
Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

I am looking for a database that is regularly updated of different bots, spiders, and crawlers. I want to be able to identify them in the log files from IIS.

share|improve this question

closed as off-topic by masegaloeh, faker, Andrew Schulman, Jenny D, Katherine Villyard Apr 19 at 11:03

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Requests for product, service, or learning material recommendations are off-topic because they attract low quality, opinionated and spam answers, and the answers become obsolete quickly. Instead, describe the business problem you are working on, the research you have done, and the steps taken so far to solve it." – masegaloeh, faker, Andrew Schulman, Jenny D, Katherine Villyard
If this question can be reworded to fit the rules in the help center, please edit the question.

1  
You are never going to completely accurately distinguish between bots and regular users due to the number of bots actively trying to mess up your detection. But if you are happy with approximations getting it mostly right, there are things to do. I find that the simplest way to tell a typical user and a legitimate crawler apart is from the requests for /robots.txt. But combining with other signals (including databases of known bots) can help produce a more reliable signal. –  kasperd Apr 19 at 6:44

1 Answer 1

up vote 4 down vote accepted

User-Agents.org has a pretty large database of user agents/spiders etc. It seems to be updated reguarly ( last update was 2/28/2009 ). Data is availible through RSS/XML.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.