| Name | Country | City | Rating | |
|---|---|---|---|---|
| Adventronic System | 0.00 ±0.0 | |||
| Adventure International (UK) | United Kingdom | 0.00 ±0.0 | ||
| Adventure International (USA) | United States | 0.00 ±0.0 | ||
| AdVentures | 0.00 ±0.0 | |||
| AEC | 0.00 ±0.0 | |||
| Aerion Software | 0.00 ±0.0 | |||
| Affine Software | 0.00 ±0.0 | |||
| Afflatus Link, Inc. | 0.00 ±0.0 | |||
| AGB Soft | 0.00 ±0.0 | |||
| Agenda | Poland | 0.00 ±0.0 | ||
| Aim Software | 0.00 ±0.0 | |||
| Äktisend Club | 0.00 ±0.0 | |||
| ALA Software | 0.00 ±0.0 | |||
| Aldebaran | 0.00 ±0.0 | |||
| Alfred Publishing Co., Inc. | United States | Los Angeles | 0.00 ±0.0 | |
| Alhart Enterprises | 0.00 ±0.0 | |||
| Alkazar Associates | 0.00 ±0.0 | |||
| All American Adventures | 0.00 ±0.0 | |||
| Alligata Software | 0.00 ±0.0 | |||
| Allotriasoft | 0.00 ±0.0 |
