Formidable Forms
Advanced WordPress form builder with data display — build pricing calculators and ROI tools as interactive lead capture.
Open-source self-hosted WordPress CRM with white-label support — flat-rate for agencies managing B2B client funnels.
Groundhogg is an open-source WordPress CRM and marketing automation plugin designed for agencies, developers, and businesses that need a fully customisable self-hosted alternative to HubSpot or ActiveCampaign. It provides contact management, email sequences, SMS automation, funnel builders, and advanced reporting — all within WordPress. Groundhogg uses flat-rate pricing with no contact limits and includes a white-label option, making it popular with agencies that want to offer CRM functionality to clients under their own brand. A free version is available on WordPress.org; paid plans with premium extensions start at $20/month.
B2B agencies that want to offer CRM and marketing automation as a managed service to clients benefit from Groundhogg's white-label option — the plugin's branding is removed and replaced with the agency's own, maintaining a professional presentation when handing dashboard access to clients. The open-source codebase gives developers full control over customisation, which matters for agencies building bespoke B2B lead management workflows that cloud CRMs cannot accommodate.