The Probert Encyclopaedia is a concise online encyclopedia containing almost 100,000 entries organized topically, written and published by Matthew Probert under the name Probert Publishing. It has an unusual search function which creates a page containing the text of all the articles matching the search, rather than giving a list of results.
The Probert Encyclopaedia was first published in 1993 as a knowledgebase for artificial intelligence systems. It was available as downloadable freeware until the 18th edition, published in December 1998, after which the author reserved the rights of distribution.
