mSIM 
m1kc-and-Solkin's instant messaging protocol. Server.
Building and running
To build it, type:
ant jar
JDK 8 is required.
To run:
cd dist
java -jar mSIM_Server.jar
or
ant run
Database is stored in the working directory. A sample database will be created if it doesn't exist. Note that the dist folder is cleaned every time you build mSIM server.