Plume is built with love — and with these excellent open-source works.
Plume's display typeface. Copyright 2020 The Fraunces Project Authors (github.com/undercasetype/Fraunces). Licensed under the SIL Open Font License, Version 1.1. The font software is used and bundled unmodified apart from static instancing; it is not sold separately.
Plume's software update framework. Copyright © 2006–2026 Andy Matuschak and the Sparkle Project contributors (sparkle-project.org). Licensed under the MIT-style Sparkle license. Portions copyright their respective authors as noted in the Sparkle LICENSE file, which is included with the framework inside the app bundle.