.NET agent string parser based on Udger https://udger.com/products/local_parser
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DataTest fix crawler error Jan 9, 2017
UdgerParser Remove YamlDotNet Oct 17, 2018
ext_lib final version for data v3 Apr 17, 2016
.gitignore Initial commit Jan 7, 2016
LICENSE Change the MIT license Nov 27, 2017
Udger.sln add DataTest Jan 6, 2017


Udger client for .NET (data ver. 3)

Local parser is very fast and accurate useragent string detection solution. Enables developers to locally install and integrate a highly-scalable product. We provide the detection of the devices (personal computer, tablet, Smart TV, Game console etc.), operating system, client SW type (browser, e-mail client etc.) and devices market name (example: Sony Xperia Tablet S, Nokia Lumia 820 etc.). It also provides information about IP addresses (Public proxies, VPN services, Tor exit nodes, Fake crawlers, Web scrapers, Datacenter name .. etc.)


  • .NET Framework 4 or later.
  • ADO.NET Data Provider for SQLite (included)
  • datafile v3 (udgerdb_v3.dat) from https://data.udger.com/

Automatic updates download


  • Fast
  • Written in C#
  • LRU cache
  • Released under the MIT


You should review the included example (ConsoleTest\Program.cs) Here's a quick example:

UdgerParser parser = new UdgerParser();
// Set data dir (in this directory is stored data file: udgerdb_v3.dat)
// Data file can be downloaded manually from https://data.udger.com/, but we recommend use udger-updater (https://udger.com/support/documentation/?doc=62)
// set user agent and/or IP address
parser.ua = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.116 Safari/537.36";
parser.ip = "2600:3c01::f03c:91ff:fe70:9208";
// parse
Udger.Parser.UserAgent a = parser.userAgent;
Udger.Parser.IPAddress i = parser.ipAddress;

Documentation for programmers


The Udger.com Team (info@udger.com)

old v2 format

If you still use the previous format of the db (v2), please see the branch old_format_v2