Open Source Marketing & Growth Tools

InCustomer Support

Fast, type-safe C++ formatting that replaces printf and iostreams

• 25,884 GitHub stars
• MITLicence MIT

Alternative toSemrush

Open source alternative to Semrush and Ahrefs

• 24,272 GitHub stars
• MITLicence MIT

Alternative toVViralClone.ai

Clone viral video formats with AI agents, batch 100+ variants

• 24,249 GitHub stars
• CustomLicence Apache-2.0 with additional terms
• #Video

Alternative toMailchimp

High-performance newsletter and mailing list manager

• 23,880 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Email

Alternative toGoogle Analytics

Self-hosted Google Analytics alternative, 100% data ownership

• 21,963 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toGoogle Analytics

Cookieless web analytics: GDPR compliant, 18 KB script

• 13,139 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toQualtrics

Collect NPS, CSAT, and user feedback with privacy-first hosting

• 13,129 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toAttio

Open source agentic CRM with a durable research agent

• 11,564 GitHub stars
• MITLicence MIT
• #CRM

Alternative toBitly

Self-hosted URL shortener with analytics and custom domains

• 11,160 GitHub stars
• MITLicence MIT

Alternative toHubSpot Marketing Hub

Self-hosted marketing automation with email and campaigns

• 10,806 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Email