SydMine is an unfinished Minecraft server written in C++ as a hobby project to try and create a more efficient and custom Minecraft server that uses less RAM and is more difficult to cheat against (X-ray mods etc.). This is only a prototype.
Unfortunately, some decisions in the design of the Minecraft protocol inhibit control over much of the behavior of the client, such as the placement of biomes (which are entirely calculated on the client with no input from the server beyond the seed). This, along with the fragility of the protocol itself has lead me to put this project on hold.
The basic networking layer is in (albeit messy) and you can log in, walk around, and destroy blocks. Nothing else works.
It's messy prototype code; I'm not proud of it.