 | |
| Company type | Private[1]: E-1 |
|---|---|
| Founded | 1985 in Walnut Creek, California, United States |
| Founders |
|
| Defunct | 1993 |
| Fate | Acquired by WordPerfect Corporation |
| Headquarters | Albuquerque, New Mexico (research and development) |
| Products | Grammatik |
Number of employees | 140 (1992, peak) |
Reference Software International, Inc. (RSI), was an American software developer active from 1985 to 1993 and based in Albuquerque, New Mexico, and San Francisco, California. The company released several productivity and reference software packages during their lifespan, including the highly popular Grammatik grammar checker, for IBM PCs and compatibles running DOS. The company was acquired by WordPerfect Corporation in 1993.