Is there a list of customers who have implmented OSLC ? not just product companies like IBM, but also OEMS like say Toyota
There are many customers who use products from IBM, Siemens, PTC, Sodius and others all of which have some OSLC APIs. Customers therefore frequently develop clients or servers using OSLC APIs to integrate with those products.
Some companies have interest to define more specific domain specs etc. You can see their logos on https://open-services.net/