BuiltWith - Find out the technology behind websites
Agilon One - Agilon One is a Nonprofit CRM software solution that connects and gathers information on constituents.
FindThatLead Prospector - Feed your sales team with daily leads.
Little Green Light - Illuminating Data. Advancing Nonprofits.
Lead Forensics - B2B website analytics and lead generation.
Donorhut - Donorhut offers cloud fundraising software for charities and non-profits of any size.