OSS-Finder logoOSSFinder

The Best Open-Source Alternatives to Follow Up Boss

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

Quick Comparison: Follow Up Boss vs. Open Source

Full comparison: Follow Up Boss vs. SuiteCRM →
CriteriaFollow Up BossOSS Replacements
Pricing modelPaid / Monthly Fees100% Free / Self-Hosted
Data ControlThird-party ServersFull Ownership & Privacy
CustomizabilityRestricted by VendorUnlimited (Modify Codebase)

Sort alternatives

Choose the metric that should define the list order.

AGPL-3.0

SuiteCRM is an open-source customer relationship management (CRM) system that offers a secure, scalable, and customizable alternative for businesses to manage contacts, sales, and customer interactions. With its ease of use, rich feature set, and commitment to user data ownership, SuiteCRM serves as a powerful and privacy-friendly alternative to commercial CRM solutions like Follow Up Boss.

⭐ 5,602 Stars
šŸ“ 2,384 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0
AGPL-3.0

EspoCRM is a customizable, open-source customer relationship management (CRM) platform that offers a feature-rich alternative to traditional CRMs, empowering businesses to manage contacts, leads, and sales pipelines with unparalleled flexibility and control. With EspoCRM, users can enjoy a privacy-friendly solution without vendor lock-in, making it an ideal choice for organizations seeking to safeguard sensitive data and maintain full ownership of their customer data.

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

Zurmo is an open-source CRM that allows users to track sales pipeline, manage contacts, and automate workflows, offering a secure and customizable alternative to traditional customer relationship management systems like Follow Up Boss. Its open-source nature ensures transparency and control over data, providing a trustworthy solution for businesses prioritizing user data privacy and autonomy.

⭐ 107 Stars
šŸ“ 46 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0

Frequently Asked Questions

What is the best open source alternative to Follow Up Boss?

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

Why should I use an open-source replacement instead of Follow Up Boss?

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.

Top Open-Source Alternatives to Follow Up Boss in 2026