In my honest opinion, there has not been a decent space combat simulator since Freelancer or the end of the I-War series, and that was a long time ago in gaming terms.
Starlight Inception is the latest contender, and judging by this trailer it has some interesting mechanics already in place:
I will be keeping an eye on this one, while it is already available on Steam as an early access title here.
I have been writing about web technology and software development since 2001. I am the developer of the Alpha Framework for PHP, and the Five.Today personal productivity app. I love open source, technology, and economics.