It's not perfect, but it's free. The reality is that our website is just for marketing and online presence; all of our actual sales come through our sales team, so analytics hasn't been our highest priority.
Zoho is great! It's really easy to configure, so we've made it work specifically to our needs. We plug it into Gmail, so it automatically pulls all of our contacts. We're under-utilizing it, if anything. Zoho is really feature-rich, and we haven't dug in as much as we'd like to, but it's great for what we're using it for.
We used to use Dropbox, but we moved everything over to Google Drive. There's just so much more integration, and everything became easier to find. It's also cheaper than Dropbox because we have a certain amount of data that comes with Gmail, and we hadn’t been utilizing it. If someone really wants something shared via Dropbox, I can do it, but I use it more for personal files.
Pivotal Tracker is pretty easy to use. We picked it initially because one of our developers liked it, and we stayed with it because of how flexible it is and because it has everything we need. We've been playing around with Trello for some other things, but we haven’t made a decision on that yet.