Encyclopaedia of Mathematics is described as 'The Encyclopedia of Mathematics wiki is an open access resource designed specifically for the mathematics community. The original articles are from the online Encyclopaedia of Mathematics, published by Kluwer Academic Publishers in 2002' and is an website in the Education & Reference category. There are more than 10 alternatives to Encyclopaedia of Mathematics, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Windows. The best alternative is Wikipedia, which is both free and Open Source. Other great sites and apps similar to Encyclopaedia of Mathematics are Khan Academy (Free), Wikiversity (Free, Open Source), Encyclopædia Britannica (Freemium) and Brilliant.org (Freemium).
Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Wikipedia has 17 million articles (3.5 million in English), which have been written collaboratively by volunteers around the world.
Wikiversity is a Wikimedia Foundation project devoted to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning.
Scholarpedia is a peer-reviewed open-access encyclopedia written and maintained by scholarly experts from around the world. Scholarpedia is inspired by Wikipedia and aims to complement it by providing in-depth scholarly treatments of academic topics.
HandWiki is a wiki encyclopedia dedicated to scientific computing and science. This wiki can be used for collaborative editing of articles about applications of computers and software programs in different areas of science, finance and engineering.