- Documentation
- Reference manual
- Packages
- SWI-Prolog C-library
- Constraint Query Language A high level interface to SQL databases
- Pengines: Web Logic Programming Made Easy
- A C++ interface to SWI-Prolog
- SWI-Prolog RDF parser
- SWI-Prolog Semantic Web Library 3.0
- SWI-Prolog SSL Interface
- Managing external tables for SWI-Prolog
- Transparent Inter-Process Communications (TIPC) libraries
- SWI-Prolog Unicode library
Packages are relatively independent add-on libraries that may not be available in all installations.