BRUIN | ⊕ 1969 | ↓ ↑ ⊕ On-Line | ⊕ Other Conversational | ⊕ United States | Conversational PL/I |
DOCUS | ⊕ 1969 | ↓ ↑ ⊕ Specialised Languages | ⊕ Other Conversational | ⊕ United States | Interactive system |
Sirus | ⊕ 1969 | ↓ ↑ ⊕ On-Line | ⊕ Other Conversational | ⊕ Russian Federation |