dsBenchmark is the world's leading tool for load testing Filemaker Server and also serves as a library of high performance techniques.
It is free and open source.
It now contains a Russian language translation, in addition to the existing translations - many thanks to Mark Kilun of CE-Labs.com for volunteering to undertake this work.
This version contains the following language options available on login:
English, French, Spanish, Mandarin Chinese and Russian.
(Japanese and German versions are in preparation)
It also includes all the demo materials used by Nick Lightbody in his 2016 FileMaker Devcon Session on "Building High Performance Mobile Apps".
You can download it from http://deskspace.com/downloads.html