A Concise Old English Dictionary
John R. Clark Hall's "A Concise Anglo-Saxon Dictionary," second edition. Each page of the original is available in PNG and TIFF formats.
Bosworth-Toller Dictionary
"An Anglo-Saxon Dictionary" by Joseph Bosworth, edited and enlarged by T. N. Toller. Each page of the original is available in HTML and TIFF formats. Includes a search engine.
Bright's Old English Glossary
Glossary from Bright's Anglo-Saxon Reader.
Dictionary of Old English Project at the Universit
Explains the purpose of the dictionary, provides a sample entry, and gives links to publications and resources.
Modern English to Old English Vocabulary
Extensive list of modern English words with their Old English equivalents.
Old English Flash Cards
1500 Old English words with their modern English equivalents.
Old English Introductory Glossary
Contains over one hundred basic Old English words with their modern English equivalents.
WordGumbo: Old English
Contains both an Old English to modern English lexicon and a modern English to Old English lexicon.