Some other public Tool Sheds that host repositories with Galaxy tools are listed in the bottom of this page: https://new.galaxyproject.org/public-galaxy-servers/
However we do not guarantee any level of security for these servers or the repositories' contents so tread carefully.
That said if your goal is to find whether tool has been already wrapped I recommend sending an email to the dev-list and ask about it. Somebody may have work in progress.
If your goal is different please specify so we can help better.