iOS 12 GUI - Free collection of UI components and screens of iOS 12
Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.
Fludish Sketch UI Kit - 🌱 Fluent iOS UI Kit designed for Sketch.
Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...
Landing UI Kit - Handcrafted UI components for landing pages
Koha - Koha is the first free and open source software library automation package (ILS).