| 'Q' Companies | Period (Timeline) | Item #: Game | Item #: Non-Game |
|---|---|---|---|
| Q Elec | |||
| Q Products | |||
| Q&Q [Japan] | 1989 (1 year) | ||
| Q-Brain Gaming, Ltd. [Moscow, Russian Federation] | 2007 to 2010 (4 years) | ||
| Q-Games | 2023 (1 year) | ||
| QBIT | 1984 (1 year) | ||
| QDI | |||
| QED Systems | 1983 (1 year) | ||
| QLS [Spain] | 1986 (1 year) | ||
| Qnix Corp. [Korea] | 1983 to 1984 (2 years) | ||
| QNX Soft. Systems [Quantum Soft. Systems] | 1989 to 1999 (11 years) | ||
| QPS Interactive [Novomatic Group] | 2004 to 2013 (10 years) | ||
| QQP | 1992 (1 year) | ||
| QTQ's Workshop | |||
| Quadtel | |||
| Quality Computers | 1991 to 1992 (2 years) | ||
| Quality Multimedia [MN, USA] | 1996 (1 year) | ||
| Quality Soft. & Consulting, Inc. [Kansas City, MI, USA] | 1983 (1 year) | ||
| Quality Soft. [Reseda, CA, USA] | 1978 to 1985 (8 years) | ||
| Quality Supply Co. [Sioux Falls, SD, USA] | 1949 to 1950 (2 years) | ||
| Qualsoft | 1984 to 1990 (7 years) | ||
| Quantel | 1981 to 1990 (10 years) | ||
| Quantic Dream | 2023 (1 year) | ||
| Quantum Astrophysicists Guild, The | 2015 to 2022 (8 years) | ||
| Quantum Axcess | 1994 (1 year) | ||
| Quantum Industries | 1992 to 1996 (5 years) | ||
| Quari Cracking Group | 1987 to 1988 (2 years) | ||
| Quark | 1989 to 1994 (6 years) | ||
| Quark Data | 1983 (1 year) | ||
| Quarterdeck | 1984 to 1986 (3 years) | ||
| Quasar Soft. [Japan] | 1987 to 1988 (2 years) | ||
| Quasimidi Musikelektronik GmbH | 1993 to 1998 (6 years) | ||
| Quasimoto Interactive, Inc. [Wadsworth, OH, USA] | 2008 to 2010 (3 years) | ||
| Quazar Computing | 1983 to 1984 (2 years) | ||
| Qubica Worldwide [Italy] | |||
| QubicGames | |||
| QUByte Interactive | 2023 to 2024 (2 years) | ||
| Que Corp. | 1984 (1 year) | ||
| Queen City Mfg. Co. [Cincinnati, OH, USA] | |||
| Queen Films | 1994 (1 year) | ||
| Queen Mary College | |||
| Queensland Copy Federation | 1988 to 1992 (5 years) | ||
| Queensoft [Japan] | 1989 to 1996 (8 years) | ||
| Quelle | 1979 to 1983 (5 years) | ||
| QuelleSoft | 1984 to 1985 (2 years) | ||
| Querne, Serge | 1983 to 1984 (2 years) | ||
| Quest | 1990 to 1995 (6 years) | ||
| Quest Automation, Ltd. | 1984 (1 year) | ||
| Quest Electronics | 1978 to 1981 (4 years) | ||
| Quest Learning Systems | 1984 to 1985 (2 years) | ||
| Quest Microsoftware | 1983 (1 year) | ||
| Quest Soft. | 1983 (1 year) | ||
| Questech Computer Ent. Soft. | 1986 (1 year) | ||
| Quested Automatic Co. [Birmingham, England] | 1932 (1 year) | ||
| Quested Automatics | 1932 (1 year) | ||
| QuesTronix | 1990 to 1994 (5 years) | ||
| Questware Soft., Inc. | |||
| Queue, Inc. | 1983 to 1993 (11 years) | ||
| Quevedo | 1965 to 1966 (2 years) | ||
| Quick Silver Dev. Co. | 1995 to 1996 (2 years) | ||
| Quickbeam Soft. | 1983 to 1986 (4 years) | ||
| Quicksilva | 1982 to 1988 (7 years) | ||
| Quickspin | 2020 to 2022 (3 years) | ||
| Quietust | |||
| Quindt, Klaus | 1995 (1 year) | ||
| Quinn, Joe | 1990 (1 year) | ||
| Quinn, William | 1991 (1 year) | ||
| Quinrose [Japan] | 2013 to 2015 (3 years) | ||
| Quintet | 1998 (1 year) | ||
| Quiring, Gary | 1985 to 1989 (5 years) | ||
| Qume | 1983 to 1992 (10 years) | ||
| Quota [Japan] | 1991 (1 year) | ||
| Qute Corp. [Japan] | 2000 to 2012 (13 years) | ||
| QVC | |||
| QWare | 1986 (1 year) |