Massive Dev Chart Timer - the ultimate handheld b&w film development tool!

Darkroom Lab Timer - for color and advanced development

Darkroom Formulas - recipe book with on-the-fly calculator

f-Stop Printing Calculator - free app for b&w printing with the zone system

Fisheye Superwide - free fun app for virtual fisheye images

Light Meter - handheld light meter for iPhone

PhotoBuddy - calculates depth-of-field, exposure values, external flash, lots more!

Simple DoF Calculator - calculates depth-of-field with camera support

DOF Calculator by Nikonians - calculates DoF and hyperfocal distances

Field Tools - open source depth-of-field calculator

DoF Calc - versatile depth-of-field calculator

DOF Calculator - another depth-of-field calculator

Photo Tools - calculates depth-of-field, reciprocity, exposure, flash etc...

Light Meter - includes aperture, shutter and ISO modes

ProcessTiming - open source darkroom process timer with highly visible digits.

XPhotoTimer.NET - free darkroom program with process timer and monitor.

CompnTemp Timer - compensating developing timer with temperature probe.

f/Calc - performs photographic forumula and optical calculations.

QuickDisc - determines exposure compensation for large format cameras.

Zone System Wheel - Luca Paradisi's exposure calculator

A Black & White Reversal Process - In Memory Of Agfa Scala 200x, by Jens Osbahr.

The VIDEC System - Precise exposure and development system, by Andrew Eads.

Photographic Processing Hazards - by Michael McCann

Cyanomicon II - Mike Ware's encyclopedia of Cyanotype.

Polaroid Image Transfers - Holly Dupre's excellent book.

Digital Negative Making Technical paper - by David Fokos.

Study of Ilford Batch Film Washing Procedure - Rolf Suessbrich's technical analysis.

The GoldFinger Craftbook for Creative Photography - Classic guide published by Silverprint.

Adobe Photoshop - The most comprehensive and powerful image editor

Photoshop Add-Ons - Huge range of third-party Photoshop plug-ins

Neat Image - Photoshop plug-in for noise reduction

Power Retouche - Photoshop plug-ins

Quad Tone RIP - Software for printing b&w images on inkjet printers

Graphic Converter - Open, convert or edit any digital image format