Systems of type None
- ALE -- Attribute-Logic Engine
- TFS -- Typed Feature Structures System
- Minipar
- GSEARCH
- SNePS -- Semantic Network Processing System
- AGFL Grammar Work Lab
- Malaga
- GULP -- Graph Unification Logic Programming
- XLFG
- WordSmith Tools
- GRIM
- Heart of Gold
- POSPAR
- Pstone
- Babel