- Icons in EXE file: Martin Hunt and Paul Campbell
- Icon on web page: Erik Plummer
- Idea to use banners in report: Marc Cross
- Xenu logo button: Fred C.
- second Xenu logo button: Charles A. Upsdell
- Volcano animated cursor: Juan C. Pradas-Bergnes
- Idea & help with SMTP integration: Mark Findlay
- SMTP class: P.J. Naughter
- Xenu artwork: William C. Chenoweth
- WinHelp version of documentation: Andrew Schoenhofer
- Regular Expressions: Henry Spencer and Guy Gascoigne
- Install and deinstall: Inno Setup
- help with Xenu banner: Bruno Zacke
- wildcards: Jack Handy
- sort icons for list columns Thomas Holte
- new Xenu icon in May 2008: Dominic Raths of Hitflip.de
- Idea and code for GraphViz: Kevin Niehage
- Current HTML Help (CHM) version of documentation: Andrey Aleksanyants