eBlocker Open Source is the successor of the commercial eBlocker GmbH that has discontinued it’s business. At commercial eBlocker times the company sold three different models with different feature sets called Base, Pro and Family.
Today eBlocker is free and the Open Source version includes all features without limitations. If you find references to the old products, please just ignore them. With your Open Source license you have no restrictions anymore.
Neu: eBlockerOS 2.5 veröffentlicht Release Notes & Download