Provision of a complete QKD post-processing stack supporting several protocols including: -) BB84 (with decoy states) -) entanglement based -) COW -) CV Different error correction algorithms are available. Implementations for various processing hardware platforms on offer. Time reference establishment via correlation search for entanglement-based systems will be provided offline only, to avoid interfacing multiple brands of time-tagging equipment. Restrictions may apply to the modulation format in CV-QKD.