The Prime Machine is an English language learning, teaching and research tool, designed to provide users with a multitude of examples from corpus texts and additional information about the contextual environment in which words and combinations of words occur.

Users can type in words or phrases and view concordance lines and other corpus data. It has research tools for more advanced concordancing, and there are also DIY corpus tools allowing small collections of your own English texts to be analysed and compared with the ready-made online corpora.