Education

KidsKonnect is a growing library of high-quality, printable worksheets for teachers and homeschoolers. The site focuses on resources for grades K through 5.

Learning How to Learn: Powerful mental tools to help you master tough subjects is a course from Coursera created by Barbara Oakley that gives you easy access to the invaluable learning techniques used by experts.

Librivox provides free audio books from the public domain. You will find 5000+ books in their catalogue.

Sigil is an open-source multi-platform EPUB eBook Editor. Sigil supports code-based editing of EPUB files and the import of HTML and plain text files. A companion application, PageEdit, allows WYSIWYG editing of EPUB files.

Nelson is a scientific software package providing a powerful open computing environment for engineering and scientific applications using modern C/C++ libraries (Boost, Eigen, etc.) and other state-of-the-art numerical libraries.

Evergreen is a scalable software for libraries that helps library patrons find library materials and helps libraries manage, catalog, and circulate those materials.

The site famously features K-12 video tutorials created by Sal Khan and the team.

RosarioSIS is a Student Information System (SIS) that features students' demographics, grades, scheduling, attendance, student billing, discipline & food service modules for school management in one web application.

CourseLab is an e-Learning authoring tool that offers a programming-free environment for creating high-quality interactive e-learning content.

Math is Apache OpenOffice's component for mathematical equations. It is most commonly used as an equation editor for text documents, but it can also be used with other types of documents or stand-alone.

LibreLingo is an open-source web app for learning language using interactive exercises. Currently, this new project only supports Spanish learning for English speakers.

BigBlueButton is an open-source virtual classroom application for online education that provides real-time audio, video, slides, whiteboard, chat, and screen sharing. It also allows participants to join the conferences with webcams and invite guest speakers.