Retro is a clean, minimalist language with roots in Forth. It supports all major OSes in use today, and was designed to be easy to learn, use, and modify for specific needs.
NHI1 is an attempt to create a non-human intelligence. It is composed of several sub-projects like theLink (formerly known as libmsgque) and theBrain, which is a persistent storage system able to save a data package from theLink without transformation.
AppScale is a platform that allows users to deploy and host their own Google App Engine applications. It executes automatically over Amazon EC2 and Eucalyptus as well as Xen and KVM. It supports the Python, Java, and Go Google App Engine platforms.
tsuru is a platform as a service with a component-oriented architecture. It provides application orchestration and instrumentation via an extensible interface for support multiple IAAS tools (currently working with Amazon AWS) and deployment management using Git.