Create web services and APIs to query and CRUD processes from Microsoft Dynamics CRM

We have been developing MS Dynamics CRM - as our central application - for 1+ years with MS Dynamics SDK and dedicated tools to query from MS Dynamics CRM database.

We have also one mobile application and web site which we need to get information from our MS Dynamics CRM database. I don't want to use MS's own Dynamics CRM SDK to create this data communication with our web site and mobile application.

Is it possible to create a fully independent (such nodejs, laravel etc.) to directly query and CRUD processes from MS Dynamics CRM database, without using MS own tools/SDKs?

Thank you