Monetas is a Switzerland based software company that was cofounded by Chris Odom, the creator of Open-Transactions. (Click for white paper.)
Chris Odom stepped down from Monetas in March 2015 and cofounded Stash. He said, "When I cofounded Monetas in 2012 with Johann Gevers, our vision for the company was of a mobile money app and commercial notary software inspired by Open-Transactions, and with an emphasis on Africa."
Monetas was a major supporter of Open-Transactions development, and spent significant financial and human resources on developing Open-Transactions from 2012 through early 2015, while also implementing their own commercial notary and mobile wallet software.
Monetas has generously released their improvements to Open-Transactions under the MPLv2 license, and the company is now focused only on their own commercial implementation.
Official site: http://monetas.net