The BOI (Sage 100's API) is available from anywhere with the Sage 100 workstation software installed.

Is the API available in French version as well?

How can we integrate this with our system?

There is no French version of Sage 100 (although there is a multi-language enhancement available from DSD).

What kind of integration are you trying to create?  It may be best if you try to describe your project's big picture...

If you are in France you should contact Sage - France for a software package specific to France

Good point BigLouie.  I was thinking Canada / Quebec (because we have active customers in Quebec using Sage 100).

We actually want to get the data(ID, Name, Category, Available quantity) from our 7-8 shops and display it at one place. This is the reason we need an API for getting the data and displaying it on our web and app

If it's just reading data, use ODBC.