Software Development Tools for ARM Architecture
- Software Development Tools for the ARM Architecture
- http://www.arm.com/products/DevTools/

Olaf Flebbe
- Perl on EPOC, documentation on the Psion Link Protocol (PLP) and a Psion5 SDK for Linux.
- http://www.oflebbe.de/oflebbe/

AppForge
- Develop applications for the Symbian Operating System using Visual Basic and AppForge.
- http://www.appforge.com/products/enterprise/crossfire/index.html

LEA Netbook Olten
- Tools and programs for the PSION Netbook running on LEA system. In german.
- http://home.datacomm.ch/leaolten/

Symbian Developer
- The people behind the EPOC operating system. Symbian's mission is to set the standard for mobile wireless operating systems and to enable a mass market for Wireless Information Devices.
- http://www.symbian.com/developer/

EikonWizard for Visual C++ and EPOC
- An Eikon GUI creation wizard for VC5++.
- http://www.mcaleely.com/freeware/EikonWizard/

Twiddlebit Software
- EPOC and SIBO (Psion) project planning and advanced OPL development tools (Plan, Plan5, OPP, OPPDBG, GPRINTER.OPX).
- http://www.twiddlebit.com/

OPX List at McAleely.com
- A list of OPXs (OPL extensions) for EPOC, Psion and Geofox PDA's.
- http://www.mcaleely.com/psion/OPX/

OPL Miscellany
- 3lib's hints page for OPL.
- http://3lib.ukonline.co.uk/opl32.htm