It's not a company, it's a teaching method/movement. The word Montessori is the name of it's originator (died 1952,) and it is used freely by anyone who uses the method:

In 1967, the US Patent Trademark Trial and Appeal Board ruled that "the term 'Montessori' has a generic and/or descriptive significance."[24] Therefore, in the United States and elsewhere, the term can be used freely without giving any guarantee of how closely, if at all, a program applies Montessori's work. The ruling has led to "tremendous variation in schools claiming to use Maria Montessori’s methods."[25]

https://en.wikipedia.org/wiki/Montessori_method#Use_of_Monte...

I went to a Montessori school from about age 3-5. The classroom was organized into stations. It was a bit like doing a workout circuit going from machine to machine, but the stations were educational.

Some of the activities I remember are:

- Pouring water from a pitcher into cups.

- Learning to tie shoes. There was a frame with laces, where you would tie the knots 5 times.

- Learning modular division - The teacher would ask what is 25/7, and you would have a bead board and a sack of beads and discover the answer is 3 R4

- Ordering tuning forks by pitch

- Reading station

http://en.wikipedia.org/wiki/Montessori_education Now there is a lot of discussions on how this approach can be translated to touch devices because moving things in the real world is something important in the approach. But most of Montessori people thinks that it is just another tool that can be useful (I think that too - it is just another tool) and there are certified Montessori teachers (I'm not) that are doing apps, and a lot of teachers told me that they love my apps