Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Zoho CRM - Omnichannel CRM for Businesses of all sizes
Bigtent - BigTent is a web-based organization and communication portal for groups.
Freshsales CRM - A full-fledged CRM for high-velocity sales teams.
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.