Grammar Zoo: A corpus of experimental grammarware

• The field of grammarware engineering has advanced enough to need a corpus.
• We composed such a corpus and accumulated many grammars from different sources.
• Overview of techniques on which our endeavour is based, is given.
• Current contents of the Grammar Zoo are explained.
• The general data model for a repository of grammars, is provided.

In this paper we describe composition of a corpus of grammars in a broad sense in order to enable reuse of knowledge accumulated in the field of grammarware engineering. The Grammar Zoo displays the results of grammar hunting for big grammars of mainstream languages, as well as collecting grammars of smaller DSLs and extracting grammatical knowledge from other places. It is already operational and publicly supplies its users with grammars that have been recovered from different sources of grammar knowledge, varying from official language standards to community-created wiki pages.We summarise recent achievements in the discipline of grammarware engineering, that made the creation of such a corpus possible. We also describe in detail the technology that is used to build and extend such a corpus. The current contents of the Grammar Zoo are listed, as well as some possible future uses for them.