The StockLayouts, freepik and LayOutReady websites provide downloadable tri-fold brochure templates. Some of the templates are free and some are for sale. All of the templates can be edited by the user.
StockLayouts offers free, editable tri-fold brochure templates for Adobe InDesign, Illustrator, Microsoft Publisher, Word, Apple iWork Pages, QuarkXPress and CorelDraw. The company website also has a wide selection of downloadable professional quality tri-fold brochure templates for sale.
The freepik website offers a free template for a vector tri-fold brochure. To avoid any fees, the user must credit the vector author.
LayoutReady has a wide selection of tri-fold brochure templates specifically for Microsoft Word and Publisher. The templates can be purchased individually or a subscription can be purchased for discounted rates.