Open Source School Management System

OpenSIS is a student information system sponsored by Open Solutions for Education, Inc. Its features include Student Demographic, Goals and Progresses, Contact Information, Gradebook, Report Cards management, Health Records management, Attendance management, Parent Portal and lot more.
It provides different access level privilege to Student, Teacher, Parent and Admin. It does support Library Services and Student Billing but it is part of enterprise edition. The best open source Student Information System (SIS) that will be equal to or better than the best commercially available SIS software in the market.

Keep it open source, always.
Bring out 3 to 4 version upgrades each year.
Release updates frequently.
Get customers involved and co-create.
Build a vibrant community that will spread the love.

OpenTeacher - Open Source Foreign Learning

OpenTeacher is an opensource vocabulary training application that helps you learn a foreign language!

Cabra - Open Source Foreign Learning

Cabra is free & Open Source, cross-platform, and award-winning studying program. Build and study flashcards with Cabra to ace your next test, learn a new language, or prepare for world domination.

Dokeos - Open Source eLearning Tool

Dokeos, besides the standard course management features, offers Flash based video-conferencing which enables you to organise live training and meetings remotely.
Powerpoint presentations can be imported and converted in to SCORMcourses.