CI/MI players: Bertin IT, Cipher, Comintelli, Crayon, Digimind, Klue, Kompyte, Market Logic, M-Brain, Northern Light, Sharpr, and Wide Narrow
This obviously doesn't include the media monitoring tools like Brandwatch, Meltwater, or the page trackers, or the SEM tools that also do social tracking (SEMRush, Ahrefs, etc)...
Edit: if i were to bet on CI, i'd try to go after content analytics in a heavy way, and compete with BuzzSumo
If you expect to read a personal account with fresh insights that matches the HN title, you will be disappointed.
I would have love to have read your personal angle. More on how things came about, the doubts, challenges - not the general stuff, but what it was like for the both of you.