To my knowledge, Atlassian doesn't really have a list of recommended WebDAV clients. Honestly, in all my years I've just use Finder on OS X, and it's worked fine.
Here's the WebDAV documentation, just in case you haven't read through it yet:
Most of us don’t need much convincing that stakeholder management is important. It just makes sense that keeping everyone in-the-know on projects and assigning clearly defined roles is key to having ...
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