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System: Searchable Directory of User Agents: Site Monitoring Services

The following is a directory of user agents, including their source and general purpose as far as we can determine. Most entries link to an "official" site containing more detailed information. You can also paste a UA from your logs into the form below, hit [Go!] and see a list the relevant agents.

We currently have 946 distinct user agents in our database representing everything from search engines to software components and spambots. These have been collected from our log files over a number of years and researched manually.

Search for User Agent

To use this form just copy and paste an entire User-Agent string from your server log file into the input box and then submit the form. The search is case-sensitive so "nokia" will not match "Nokia".

Most user agent strings now contain a number of separate components so the search will return a list of everything that has a match in the database.

Analyse UA:

Site Monitoring Services

View Category:

1) ChangeDetection -
Every time your website changes we'll notify your visitors.
2) eCatch -
Wysigot captures and monitors all internet, network and local sites
3) InternetSeer -
InternetSeer remotely monitors your Web site to insure that your Web site is available 24/7. If InternetSeer is unable to reach your site, we will send you an immediate email alert that your site is unreachable.Linbot
4) jaGuard -
jaGuard bot visits only those URLs that are officially signed up for our monitoring service.
5) LinkAlarm -
6) LinkWalker -
Link Walker crawls the web for broken links, offering the 'service' to site owners.
7) -
Monitor Websites, Servers, Visitors and more.
8) Nambu -
Nambu is a social networking application for OS X
9) Pingdom -
Pingdom offers server, network and website monitoring services.
10) Poodle predictor -
Poodle predictor is a tool that attempts to give you an idea of how your site will show up in the search-engine results.
11) Right Web Monitor -
Right Web Monitor is a handy tool that lets you  automatically check your favorite Internet resources and detect changes in their content.
12) robotgenius -
Robot Genius develops behavior-based technology that locates, identifies and protects against various forms of malware.
13) Simpy -
Your bookmarks are stored and backed-up on a remote server, allowing you to access and search them from anywhere
14) SnykeBot -
Snyke est un "agent" de surveillance de page Web
15) WebRescuer -
WebRescuer is a hosted website monitoring service that checks availability, accessibility and performance of your web site.

For more information on the user agents listed you can click on the associated link. If you think any of the information here is incorrect or misleading please let us know using the Feedback link below.

Please be aware that we do not add user agents to the database on request, but rather wait to see them in our log files.

Browse User Agents by Category

Browser Extensions (42)
Browser extensions are programs that change or enhnace your web browser. Some of them also collect data by sending information on your browsing habits back to a central server.
Content Management (13)
Data Collection - Commercial (47)
These are sites that collect information for commercial benefit. As far as we are aware no useful information or reports are provided to the public.
Data Collection - Research (29)
These agents are conducting research on the WWW. They may also offer commercial services.
Devices (23)
Mobile phones and other gadgets with browser technology.
Download Managers (39)
Programs that enable users to download or extract information from a website or web server.
Indexing Tools (50)
This is software that enables local or remote indexing of web pages and other content for the purposes of setting up a search engine.
Link Checking Utilities (41)
This is software that conducts remote or local link checking.
Media Players (5)
Applications for playing music, video and other media over the Internet.
Other Resources (12)
Links to online resources relating to robots and spiders.
Proxies (7)
If several clients request the same content, the proxy can deliver that content from its cache, rather than requesting it from the origin server each time.
RSS/Atom Aggregators (43)
These are browser extensions or search spiders that focus on indexing or aggregating RSS and Atom feeds.
Search Engine Spiders (220)
These agents conduct Internet-wide indexing for various search engines.
Server Platforms (6)
Server Software (31)
Site Monitoring Services (15)
Software Components (58)
These are code libraries or application development packages that can be used to build Internet-related applications. How they are used depends on the developer.
Spambots? (45)
These are programs that are used predominately to harvest email addresses, find open guestbooks to post to, etc. They may also have legitimate uses.
Unclassified (174)
The following user agents have either not been identified or do not fit neatly into other categories. New agents appear every day that have limited lifespans. Most (but not all) legitimate user agents identify themselves with a URI or email address.
Validation Tools (10)
These are programs and sites that can be used to validate various aspects of your site: HTML, CSS, META tags, etc.
Web Browsers (36)

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