Interleaf

Interleaf, Inc., was a company that created computer software products for the technical publishing creation and distribution process. Founded in 1981, its initial product was the first commercial document processor that integrated text and graphics editing, producing WYSIWYG ("what you see is what you get") output at near-typeset quality. It also had early products in the document management, electronic publishing, and Web publishing spaces. Interleaf's "Active Documents" functionality, integrated into its text and graphics editing products in the early 1990s, was the first to give document creators programmatic access (via LISP) to virtually all of the document's elements, structures, and software capabilities.

Broadvision acquired Interleaf in January 2000, and Aurea Software Inc. acquired Broadvision in May, 2020.

Interleaf's headquarters was in Cambridge, Massachusetts, US, and later moved to Waltham, Massachusetts.