- 1951: Inception of Mercantile Group
- 1985: MOS was established
- 1989: Pumori, the first Banking Software of Nepal was implemented at Nepal Arab Bank Ltd.
- 1995: Client Server Architecture (RDBMS)
- 2000: Pumori Backend base
- 2004: PumoriPlus with Hybrid Solution (central and distributed server)
- 2007: PumoriPlus with central server and centralized database
- 2009: PumoriPlus in WEB interface version
Pumori is a complete banking solution which facilitates a wide range of banking operations from front end to back end.