I have recently complied a list of commercial tools that provide OSLC support. The survey describes in detail which OSLC capabilities are supported to which tools.
You can download the survey from http://doi.org/10.5281/zenodo.3777756.
I also plan to keep the list of tools up to date as a Google Sheets. So, please feel free to update me on tools that I have not yet found.
A report that summarises this survey, as well as give general reflections over OSLC implemenation can be found as
J. El-khoury, “An Analysis of the OASIS OSLC Integration Standard, for a Cross-disciplinary Integrated Development Environment : Analysis of market penetration, performance and prospects,” , TRITA-ITM-RP, 978-91-7873-525-9, 2020.