Minimal System Instruments has released Modular Mastering Rack.
Modular Mastering Rack, £45, is a complete mastering package that features a master track processing plug-in consisting of an EQ, a Compressor, and a Limiter. Also included in the package are all three processors from the modular rack but as separate plug-ins (These separate plug-ins can be used throughout your mix on drum channels or instrument channels). In total there are four plug-ins (3 individual processors and 1 master channel modular rack).
Available for Windows in the VST format.