We have taken some of the optimization features that are not related to caching, and made them available for use by anyone. No LiteSpeed server required.
Your guide to all of the LSCache add-ons currently available: there are more of them than you think!
We benchmarked OpenLiteSpeed, NGiNX, and Apache. We looked at how the three web servers handled a small static file and a simple PHP script, and then we evaluated their WordPress performance.