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Makes it incredibly simple to get a good idea of how secure your config is and where compatibility problems might arise.

I have been doing a lot of SSL/TLS research the last few days and found the following to be great resources from Qualys too:

This repo is a collection of sensible SSL/TLS options for a variety of web servers, including Apache.

For TLS? I can think of at least two sites that have been posted on HN recently that do just that.