RegNum – The International Clade Names Repository – Available Beta version

Phyloreferencing – Phylo2OWL

ToLKIN – Tree of Life Knowledge and Information Network
Beaman, R.S., Traub, G., Dell, C., Santiago, N., Koh, J., Cellinese, N. 2012. TOLKIN – Tree of Life Knowledge and Information Network:  Filling a Gap for Collaborative Research in Biological Systematics. PLoS One 7(6): doi:10.1371/journal.pone.0039352

BiSciCol – Biological Science Collections Tracker – The BisciCol Triplifier
Stucky, B.J., Deck, J., Conlin, T., Ziemba, L., Cellinese, N., Guralnick, R. 2014. The BISciCol Triplifier: bringing biodiversity data to the Semantic Web. BMC Bioinformatics. BMC Bioinformatics 15: 257.

Code repository