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.

[5] It initially ran on workstations from Sun Microsystems and Apollo Computers, but later ported its software to workstations made by Digital Equipment Corporation, HP, IBM and SGI, and later still, to the Apple Macintosh II and the IBM Personal Computer.

[5] Inspired by the Xerox Star and Apple Lisa, TPS (Technical Publishing Software) uniquely enabled authors to write their text and create technical graphics on a computer screen that showed what the page would look like when formatted and printed on a laser printer.

TPS was also noted for its ability to handle the sorts of long documents corporate technical publishing departments routinely created.

By 2023, we found only one such service in the marketplace: ZANDAR Corporation's TagWrite, that claims to have the ability to make precise, programmatic conversion of Interleaf/Quicksilver entirely in computer memory without human intervention.

Classes might include common document elements such as a body, paragraphs, titles, subheadings, captions, etc.

If this caused a change in pagination — increasing the font size could change where the page breaks were — the software would update the screen quickly enough for the author to continue typing, including altering all of the cross-references that the author may have inserted; this WYSIWYG capability was a competitive advantage for the company.

Typical applications included documents that automatically generated and updated charts based upon data expressed in the document, pages that altered themselves based on data accessed from databases or other sources, and systems that dynamically created pages to guide users through complex processes such as filling out insurance forms.

For example, the same documents could be formatted for reading on a small laptop screen or for a large workstation's monitor.

[13] In the electronic distribution area, Adobe Acrobat, launched after Interleaf Worldview, became the dominant software.