Squeak

http://squeak.org/ Squeak is an open-source Smalltalk programming system with fast execution environments for all major platforms. It features the Morphic framework, which promotes low effort graphical, interactive application development and maintenance.

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Udutu

http://www.udutu.com Udutu’s Course authoring tool is an easy‑to‑use and easy‑to‑master, web based tool helping you create engaging content that gets results. Udutu is FREE TO TRY, and remains free forever for up to 5 users.

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Zope.org

http://www.zope.org Zope is a free and open source web application server written in the object-oriented programming language “Python”. Since it’s release in 1998 Zope continued to grow into many distinct applications, frameworks, libraries and tools.

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