Ninja Forms

Modular WordPress form builder — unlimited free forms, pay only for the add-ons your B2B site actually needs.

Lead Conversion plugin

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At a glance

Best for
agencies, small-b2b-sites, independent-builders
Type
plugin
Pricing
freemium
Main use case
Basic to intermediate lead capture forms with modular add-ons for specific CRM or payment integrations.
Workflow stage
Lead Conversion

Details

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Overview

Ninja Forms is a modular WordPress form builder that separates its feature set into a free core and paid add-ons, allowing teams to pay only for the integrations and features they actually need. The free version includes unlimited forms, submissions, and fields — making it genuinely capable for basic lead capture. Add-ons cover CRM integrations, payment processing, multi-part forms, and conditional logic. Ninja Forms is known for its developer-friendly architecture with an extensive hook system, and it is frequently used on agency client sites where the core plugin is sufficient and only specific add-ons are purchased. Plans start at $49/year for basic add-ons.

Key features

  • Unlimited forms, fields, and submissions in the free version
  • Modular add-on architecture u2014 pay for only the integrations needed
  • Developer-friendly with extensive action and filter hooks
  • Multi-part forms for longer lead qualification flows (add-on)
  • CRM integrations including Salesforce, HubSpot, and Mailchimp (add-ons)
  • Payment processing via Stripe and PayPal (add-on)

Common use cases

  • Agency building client sites where different clients need different integrations from the same plugin
  • Small B2B company needing unlimited forms without a Pro subscription for basic contact forms
  • Developer building a custom lead routing workflow using Ninja Forms' hook system

Why it matters for B2B

B2B agencies that build client sites with varying form requirements benefit from Ninja Forms' modular pricing — a client that needs only a contact form and a Salesforce integration pays for just those two things, rather than a bundled plan that includes features they will never use. The unlimited free forms and submissions in the core plugin make it viable for basic lead capture without any paid investment.

Pros

  • Unlimited forms and submissions in the free version u2014 genuinely capable for basic lead capture
  • Modular add-ons avoid paying for unused features
  • Strong developer community with extensive documentation

Limitations

  • Conditional logic is a paid add-on u2014 unlike Fluent Forms which includes it free
  • Add-on costs can exceed competitors when multiple integrations are needed
  • Interface is less polished than WPForms for non-technical users