Celartem, Inc., doing business as Extensis, is a software company based in Portland, Oregon.

[1] Extensis and its parent company CreativePro.com were sold to ImageX in year 2000, which in turn sold Extensis to Japanese content-management company Celartem Technology in 2002.

[2] In 2003, Extensis acquired competitor DiamondSoft and their Font Reserve applications (stand-alone and client-server).

[3] In January 2006, Extensis merged its two font management products, Font Reserve and Suitcase into a single product called Suitcase Fusion.

[4] In August 2010, Extensis launched WebINK, a web font subscription service.