JSGF (short for Java Speech Grammar Format or JSpeech Grammar Format) is format for specifying grammars for speech recognition engines. A speech recognition grammar is a set of rules defining word patterns that the speech recognition engine will recognize. The JSGF specification is defined by W3C.
To make it easier to create and edit JSGF grammars, I've built this online JSGF editor. It is intended to be used by developers who work with speech recognition grammars.
You can either open and edit an existing grammar file or create a new one from scratch. The JSGF syntax highlighting feature makes it easier to read and edit the grammar files.