I had done some research about the topic some time back, these are the links I had gathered. I was researching Java edition specifically, however among the ones linked below, at least one (Nukkit) has a Bedrock (C++) edition) Paper https://papermc.io/ Bukkit https://dev.bukkit.org/ Spigot https://www.spigotmc.org/ Nukkit https://cloudburstmc.org/articles/ Folia (mod for Papaer) https://github.com/PaperMC/Folia. - Source: Hacker News / 3 months ago

We will be downloading the Minecraft server files into this directory. To preface, there are numerous variations of server JARs that can be used (e.g. Spigot, Paper, Purpur each touting their own benefits). For this tutorial, we will be working with Paper, a fork of Spigot that is optimized for performance. - Source: dev.to / 5 months ago

Go to papermc.io and download Waterfall or Velocity. Source: 11 months ago

The latest version of Spigot or Paper for your Minecraft servers from here or here. Source: 11 months ago

I am going to assume your client needs the optimizations not the server otherwise I would recommend paper. If you are looking for client sided optimization I'm going to recommend things like sodium, Iris Sharders, and lithium. I have used Optifine in the past and found it to be sub par when compared to those three but you might find different. I am going to recommend Atlaunch as Ive found it to be better than... Source: 12 months ago

I'm using Zap Hosting for my servers. Theres a pay once for a lifetime that is totally worth it in my opinion for beam.ng. You can add the mods you want and change the maps without problems. Source: 6 months ago