<p>ANNIS (ANNotation of Information Structure), now in version 3.4.3, is an open source browser-based visualization architecture designed to annotate complex multilevel linguistic corpora. Now in its second version, ANNIS enables users to concurrently annotate, query and visualize data for syntax, semantics, morphology, prosody, referntiality, lexis and so forth. It also offers support for spoken language and audio and visual annotation.</p>