SteelMC
A Minecraft server in Rust focused on a strong foundation
...Its networking layer supports Java Edition authentication, encryption, compression, and protocol communication. World generation is currently its most complete system and is tested against reproducible vanilla chunks for block-level parity. SteelMC remains in pre-alpha, with incomplete survival mechanics, limited entity behavior, no plugin system, and no compatibility with Bukkit, Paper, Fabric, Forge, or NeoForge extensions.