[5] HAProxy is used by a number of high-profile websites including GoDaddy, GitHub, Bitbucket,[6] Stack Overflow,[7] Reddit, Slack,[8] Speedtest.net, Tumblr, Twitter[9][10] and Tuenti[11] and is used in the OpsWorks product from Amazon Web Services.

[12] HAProxy was written in 2000[13] by Willy Tarreau,[14] a core contributor to the Linux kernel,[15] who still maintains the project.

[citation needed] The company provides a commercial offering, HAProxy Enterprise and appliance-based application-delivery controllers named ALOHA.

[20] HAProxy Technologies’ ALOHA is a plug-and-play load-balancing appliance that can be deployed in any environment.

[21] HAProxy has had the following version releases:[22] Servers equipped with 6 to 8 cores generally achieve between 200,000 and 500,000 requests per second, and have no trouble saturating a 25 Gbit/s connection under Linux.