SQL
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Ted Codd in the early 1970s. This version, initially called "SEQUEL" ("Structured English Query Language"), was designed to manipulate and retrieve data stored in IBM's original quasi-relational database management system, System R, which a group at IBM San Jose Research Laboratory had developed during the 1970s.
Watcom
In 1992, Watcom began a move into the client-server arena with the introduction of Watcom SQL, a SQL database server product. Being a very small company (about 8 developers) they managed to produce high quality software, famous among software developers. Watcom SQL is still in production, now under the name "SAP SQL Anywhere".