Since 1898, Bosworth-Toller's Anglo-Saxon Dictionary has been the primary lexical reference for study of the Anglo-Saxon language. This huge dictionary is based on the manuscript collections of Joseph Bosworth, edited and enlarged by T. Northcote Toller. It is perhaps the most comprehensive dictionary of the English language ever published. This Old English Dictionary is out of print, hard to find, and expensive. It's also huge and not that fast to look up words in, especially as one must check both the original dictionary plus several supplements.
BosworthToller is a computer version of the Bosworth-Toller Anglo-Saxon Dictionary. It was scanned by some scholars and put on the internet as an XML file at http://beowulf.engl.uky.edu/~kiernan/BT/Bosworth-Toller.htm. This file was created by OCR (Optical Character Recognition) scanning and is awkward to search.
BosworthToller for the Macintosh is a program that lets you search the dictionary by entering substrings and typing in the weird Anglo Saxon characters by their modern equivalents. As a result, it is faster and easier to use than the physical version or even the online version. It will only work on an Apple Macintosh computer OS X. Best of all, the program is available free of charge.
For more information, or to download the Bosworth Toller program, go to http://www.davidfinucane.com/bosworthToller.html
