The Ubuntu 9.04 Server Edition beta includes Eucalyptus, an open source software infrastructure for implementing “cloud computing” on clusters, such as Amazon’s EC2 (Elastic Compute Cloud). Eucalyptus is provided as a technology preview to allow users “to experiment with cloud computing”. EUCALYPTUS -- Elastic Utility ...

eAccelerator is a free open-source PHP accelerator, optimizer, and dynamic content cache. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times. eAccelerator stores compiled PHP scripts in shared ...