Regina Obe and Leo Hsu are co-founders of Paragon Corporation, a database and web application consulting company based in Boston. They have extensive experience with PostGIS and PostgreSQL. They are co-authors of PostGIS in Action (1st and 2nd editions) (publisher Manning) and PostgreSQL: Up and Running (1st and 2nd editions) (publisher O'Reilly).

They are currently working on more books, pgRouting: a Practical Guide, (publisher LocatePress) and PostgreSQL: Up and Running (3rd edition).

Leo Hsu and Regina Obe presents 5 Events: