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The Best Open-Source Alternatives to Ontraport

Are you looking for a free or self-hosted alternative to Ontraport? In 2026, avoiding expensive proprietary software subscriptions is easier than ever. The open-source community has built excellent privacy-friendly tools within the Marketing Automation ecosystem. Currently, there are 3 active replacements available, with Mautic being one of the most prominent selections.

Quick Comparison: Ontraport vs. Open Source

Full comparison: Ontraport vs. Mautic →
CriteriaOntraportOSS Replacements
Pricing modelPaid / Monthly Fees100% Free / Self-Hosted
Data ControlThird-party ServersFull Ownership & Privacy
CustomizabilityRestricted by VendorUnlimited (Modify Codebase)

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Mautic

šŸ“ˆ Trending⭐ 10k+ Stars
NOASSERTION

Mautic is a comprehensive, privacy-focused marketing automation and customer relationship management (CRM) platform that empowers businesses to effectively manage leads, automate workflows, and build meaningful connections with their audience. As a feature-rich alternative to Ontraport, Mautic offers a free, open-source solution that prioritizes user data protection and customization, making it an ideal choice for organizations seeking a private, cost-effective, and highly scalable marketing automation platform.

⭐ 10,259 Stars
šŸ“ 3,387 Forks
ā— 0 Open Issues
šŸ·ļø NOASSERTION
AGPL-3.0

SuiteCRM is a free, open-source customer relationship management (CRM) software that helps businesses manage contacts, leads, and sales while prioritizing data ownership and security, offering a compelling alternative to paid solutions like Ontraport. With its robust feature set, customizable interface, and community-driven development, SuiteCRM empowers individuals and organizations to take control of their data and operations without compromise.

⭐ 5,606 Stars
šŸ“ 2,387 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0
AGPL-3.0

EspoCRM is a highly customizable, open-source customer relationship management (CRM) solution that empowers businesses to manage leads, contacts, and sales in a secure, private, and scalable manner. As a robust alternative to Ontraport, EspoCRM offers unrivaled control over data ownership and privacy, making it an ideal choice for organizations seeking a transparent and community-driven CRM solution.

⭐ 3,177 Stars
šŸ“ 913 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0

Frequently Asked Questions

What is the best open source alternative to Ontraport?

Based on GitHub community data (including star count and fork activity), Mautic stands out as one of the most reliable open-source replacements for Ontraport today.

Why should I use an open-source replacement instead of Ontraport?

Switching to an open-source solution ensures complete data sovereignty, protects your software environment from sudden vendor price hikes, and gives you full transparent control over your tech-stack metadata.