Parsers for English
- ASD grammars and parser
- Connexor Machinese Syntax and parser
- C&C parser for Combinatory Categorial Grammar
- DELPH-IN, Deep Linguistic Processing with HPSG (Head-Driven Phrase Structure Grammar)
- Link Grammar Parser -- a dependency parser from CMU. The latest, supported versions are hosted here, at Abiword. Open source, BSD license.
- Minipar
- OpenCCG parser and grammar development environment for Combinatory Categorial Grammar
- Shalmaneser
- Spejd - Shallow Parsing and Disambiguation Engine a GPL tool for simultaneous partial parsing and rule-based morphosyntactic disambiguation
- Syntactic dependency parser for English