Savahapp - The all-in-one design sharing, collaboration, workflow and app prototyping platform

Invenio - Invenio is a free, open-source software to run a digital library or document repository on the web.

Red Pen - Red Pen lets you upload your design, share a short URL, and get live, annotated feedback super-fast.

Greenstone Digital Library - Greenstone is a suite of software tools for building and distributing digital library collections...

avocode - Centralize design collaboration, version control, prototyping, feedback, and developer hand-off with Avocode. Work on any design, anywhere, with anyone. Sign up free 👉 https://avocode.com/.

Evergreen ILS - Evergreen - Open Source Library Software