Makeflow is a workflow engine for executing large complex applications on clusters, clouds, and grids. It can be used to drive several different distributed computing systems, including Condor, SGE, and the included Work Queue system. It does not require a distributed filesystem, so you can use it to harness whatever collection of machines you have available. It is typically used for scaling up data-intensive scientific applications to hundreds or thousands of cores.
The overall objective of the XtreemOS project is the design, implementation, evaluation, and distribution of a grid operating system (called XtreemOS) with native support for virtual organizations (VO). XtreemOS is capable of running on a wide range of underlying platforms, from clusters to mobiles. It is based on Mandriva Linux, with support to come for other distributions later.
GRIA is Grid middleware that enables use of the Grid in a secure, interoperable and flexible manner. It makes use of business models, processes, and semantics to allow resource owners and users to discover each other and negotiate terms for access to high-value resources. It implements an overall business process to find, procure and utilise resources capable of carrying out high-value, expert-assisted computations. By focusing on business processes and the associated semantics, it enables users to provision for their computational needs more cost effectively, and develop new business models for some of their services. Services from different providers can be combined together to create applications using a simple and easy-to-use API.