[Jessica Boucher]

You're looking moreso for an Opportunities tracking tool with pipelines. This way you can see your fundraising in its stages and build pipeline reports on it.

Salesforce offers 10 free licenses if you're a registered 501(c)3 - NE FIRST uses it as their backend for their heavy-duty pipeline tracking. Check it out at http://www.salesforcefoundation.org/

I also use Smartsheet at work for Gantt charting but they also have templates around Pipelines - https://www.smartsheet.com/sales-pipeline. That service has unlimited sharing as long as you purchase one license and is ridiculously easy to use.

Doing a quick search brought up Zoho CRM - which is free for 3 users and does opps. I've played with it and it's not bad, but can have a steep learning curve.
I would also dig around the google apps marketplace and see what you like from there. Good luck!