A Simple LAN / TCP Network Benchmark Utility

LANBench is a simple LAN / TCP Network benchmark utility. It is designed for testing network performance between two computers and is based on Winsock 2.2. LANBench tests TCP performance only and is designed for minimal CPU usage so that the pure performance of your network could be fully tested.

Features summary:

  • Freeware
  • Multiple simultaneous connections - up to 20 (for load simulation)
  • Low CPU overhead for pure network performance test
  • Multithreaded utilizing Windows I/O completion port
  • Configurable packet size, test duration and transfer mode


LANBench is a standalone application - no installation is required. Simply unzip the contents of the archive into a folder of your choice and run LANBench.exe. Remember to read 'Usage Guide.txt'.


Visit the LANBench Forum for help, support, feedback and bug reports.


Get LANBench version 1.1.0 here:

download    1.93MB

LANBench has the following restrictions (by downloading, you agree to the following terms and conditions):
  • Not to be redistributed
  • Not to be used for commercial purposes
  • Agreement setforth in file named 'EULA SOFTWARE LICENSE AGREEMENT.rtf' in the zip archive.

Change History

Version 1.1.0
  • LANBench now allows the use of DNS host name as server address.
Version 1.0.6
  • LANBench can now be safely run under 64-bit Windows.
Version 1.0.5
  • Fixed: Application may hang if an attempt to connect to non-existent server is made by the client
Version 1.0.4 Version 1.0.2
  • Fixed: App may hang upon startup on some machines
Version 1.0.1
  • Fixed: Server settings do not take effect after reconfiguration until LANBench restart
  • Updated to use the latest version of Managed C++ framework which has various fixes directly affecting the stability of LANBench, as well as speed gains
Version 1.0.0
  • Pilot Release