- SWISH
- The Simple Web Indexing System for Humans provides the SPS search engine back end.
- libXML
- libXML is used by SWISH to parse HTML and XML documents.
- LinkLint
- LinkLint is a utility for checking HTML documents for broken links.
- YAVS
- The Yet Another Vertical Scroller applet provides a simple vertical scrolling index tool.
- Robots
- Documentation on the Robot Exclusion Standard and robots.txt.
- Perl
- Documentation (i.e. perldoc()) for the various libraries included with SPS.
- HTML Area
- Documentation for the HTMLArea rich text editor component (field type richText).
- FCKEditor
- Documentation for the FCKEditor rich text editor component (field type richText2).
- JavaScript Calendar Component
- Documentation for the JavaScript calendar component.