Arachne has been built to pragmatically explore the advantages and drawbacks of Aspect Oriented solutions to software extensibility, software adaptability and software evolution issues on real world applications. Arachne has been applied to the squid web cache under the Linux operating system.
Entropy is a virtual machines manager for clusters which performs dynamic consolidation. It is developed by the ASCOLA research group , at the Ecole des Mines de Nantes . Entropy observes the current CPU and memory requirement of each virtual machine and computes a globally optimized placement of them that satisfy all their requirements while using a minimum number of hosts.