Bing is a software tool that assesses the RAW bandwidth of a remote network link, developed by Pierre Beyssac.
It's important to note that when referring to a "remote" link, this means a link not directly connected to your computer. For example, you can measure the bandwidth of a link between your ISP and the rest of the internet. Bing uses ICMP and sends Echo Request packets of various sizes to determine RTT changes. It then performs multiple measurements, taking the minimum RTT for each host and packet size to achieve accurate results.
For those who want more information on Bing, there is a README file available to read. There are two versions of the source available. The latest stable official release is version 1.0.4, which only runs on Unix. The version 1.1.3 is a derived development release which has been ported to Win32 platforms. Though it is a development release, it is considered stable enough to use instead of the 1.0.4 release. Those using the 1.1.2 release on Win32 are recommended to upgrade to this 1.1.3 release, as the RTT measurements have been greatly improved.
In this latest release, some Win32 code has been added, and there have been updates to the bing man page and the README file. Additionally, the makefile has been enhanced. Overall, Bing is a reliable and effective network measurement tool.
Version 1.3.5: N/A