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In addition to OSE, ahrefs or SEMrush are awesome tools that can be used to reverse engineer a competitors link profile.
If you haven't already done so, you may also want to review Rand's whiteboard Friday about getting your first 50 links to make sure you're got all the low hanging fruit before diving into other kinds of link building.
I'm surprised no one has mentioned Asana yet. I've found this tool invaluable when it comes to managing multiple teams (content, development, outreach, etc.) True, it functions very similar to Trello, but I think the format is a bit more intuitive. It always seemed that my Trello calendar was always looking so cluttered... though that could be operator error 
In addition to OSE, ahrefs or SEMrush are awesome tools that can be used to reverse engineer a competitors link profile.
If you haven't already done so, you may also want to review Rand's whiteboard Friday about getting your first 50 links to make sure you're got all the low hanging fruit before diving into other kinds of link building.