## Are you a test designer, a test developer or a tool vendor?
**Your contribution is most welcome!**
Active contributions to the TDL standardisation require an ETSI membership.
Any interested company can find how to become an ETSI member [here](http://www.etsi.org/membership/apply).
## The TOP source base is openly accessible
Its usage is governed by the Eclipse Public License (EPLv1). A source code contribution to TOP (merge request) requires adhering to EPLv1 and signing a Contributor Agreement between the developer and ETSI TC MTS beforehand.
* Find out more about TOP governance on the [Governance wiki page](Governance).
* Find out more information on how to contribute here.
