The first, pMachine Pro, is no longer developed, but was weblog software that had both a free and a licensed version.
pMachine's feature list was similar to other weblog software of the time, such as Movable Type, Geeklog, and LiveJournal.
It is a general purpose content management system written in object-oriented PHP and using MySQL for data storage.
Its flexibility and accessible templating language has made the system popular among web designers not skilled in server-side programming.[who?]
In October 2014, at the ExpressionEngine Conference in Virginia, EllisLab CEO Derek Jones announced that the company had transferred CodeIgniter to the British Columbia Institute of Technology.