OESS: Open Exchange Software Suite
OESS is a set of software used to configure and control dynamic (user-controlled) layer 2 and layer 3 virtual circuit networks on MPLS-enabled switches. OESS provides sub-second circuit provisioning, automatic circuit failover, per-interface permissions, and automatic per-VLAN statistics. It includes a simple and user friendly web-based user interface as well as a web services API.
For more information please see Open Exchange Software Suite (OESS).