CTFd is a Capture The Flag framework focusing on ease of use and customizability. It comes with everything you need to run a CTF and it's easy to customize with plugins and themes. Create your own challenges, categories, hints, and flags from the Admin Interface. Dynamic Scoring Challenges. Unlockable challenge support. Challenge plugin architecture to create your own custom challenges. Static & Regex-based flags. Custom flag plugins. Unlockable hints. File uploads to the server or an Amazon...
FreeMUD is a free text-based MUD game server designed from the ground up using Python 3.
A minimum of Python 3.3 is required to run this program due to its use of the new python socket method "detach()" and bugfixes to the detach() method that were implemented as of Python version 3.3.
Note: The project is currently in a semi-barebones, alpha-ish state. A number of planned features are not yet implemented, while others are in the process of being implemented and may not yet be complete.
An alternative/custom Minecraft server, written in Java, compatible with the original protocol. OpenCraft is built upon Apache MINA, SLF4J, Jython and XStream. The aim is to have features not in the official server distribution, like antigrief/scripting.