What are some alternatives?
When comparing Kiwix and Viki - Wikipedia, you can also consider the following products
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
XOWA - The free, open-source, offline wiki application
Infogalactic - The planetary knowledge core
WikiTaxi - WikiTaxi It's a portable application that delivers the Wikipedia of your choice to wherever you...
Oppia - Oppia is a free, open-source learning platform.
Aard Dictionary - Dictionary and offline Wikipedia reader.