Gibbon review 2026: free open-source school management system. Explore features, self-hosting costs, pros, cons and alternatives for schools.
Category
Online Learning
Pricing
Open Source (free software; users pay only for their own hosting), from Free (software); hosting costs vary by provider
Verified
Not yet
Last updated
July 18, 2026
Founded
2010
Headquarters
Hong Kong (distributed volunteer community)
Free PlanWeb AppOpen SourceSelf-Hosted
Overview
Gibbon is a free, open-source school management platform founded in October 2010 by educator and technologist Ross Parker, now in its 30th major version after fifteen years of continuous development.
It covers the full operational surface of running a school, from student records and attendance to gradebooks, finance, and communication, and runs on a standard PHP/MySQL web stack.
Key Features
Gibbon ships with roughly two dozen core modules spanning student management, attendance, assessment and markbooks, lesson planning, finance, and internal communication.
Distinctive tools include the Fast Student Finder for quickly surfacing academic, behavioral, medical, and SEN alerts, and Smart Blocks for reusable lesson planning.
Pricing
Gibbon's software is entirely free and open source with no freemium or SaaS licensing model; core features will always remain free according to the project.
The real cost to a school is web hosting (self-managed or via a third-party provider) plus optional paid support or custom development services.
Key Features
Student information management — Central student records with a Fast Student Finder tool for quickly surfacing academic, behavioral, medical, and SEN alerts.
Attendance tracking — Attendance recording for form groups or individual students, with historical pattern views to identify absence trends.
Markbook and assessment — Homework assignment, online submission, and a gradebook (Markbook) for recording and reporting assessment results.
Lesson planning tools — Reusable 'Smart Blocks' for rich multimedia lesson plans that can be shared with students and parents.
Finance module — Tools for managing school fees and billing workflows within the same platform.
Communication tools — Internal messaging and notification tools for staff, students, and parents, including a dedicated calendar module.
24+ core modules — A broad set of built-in modules covering academics, operations, and communication out of the box.
Custom module development — Because the codebase is open source, schools or developers can build additional custom modules tailored to specific workflows.
Pros & Cons
Pros
Completely free and open-source with no per-student licensing fees
Highly flexible and extensible thanks to open, modular PHP codebase
Broad feature set spanning academics, attendance, finance, and communication in one system
Runs on affordable, widely available PHP/MySQL hosting
Popular and well-documented within international and independent school communities
Cons
No managed SaaS option from the project itself; schools must arrange and pay for hosting separately
Requires technical setup and maintenance knowledge (or a paid contractor) to run reliably
Interface and UX are less polished than well-funded commercial school information systems
Smaller support team compared to commercial SIS vendors, relying heavily on community forums
Custom modules or heavy customization require developer resources most small schools don't have in-house
Pricing
Gibbon Core (self-hosted) Free N/A
Hosting (third-party, variable) Varies by provider Monthly or annual
Paid support / custom development Contact for pricing Project-based
Frequently Asked Questions
Is Gibbon really free?
Yes, Gibbon's core software is completely free and open source; the only real costs are hosting infrastructure and any optional paid support or customization.
Who created Gibbon?
Gibbon was founded in October 2010 by educator Ross Parker, who remains the project's founder and lead developer.
What kind of server does Gibbon require?
Gibbon runs on a standard PHP and MySQL/MariaDB web server, similar to hosting requirements for platforms like WordPress.
Does Gibbon include attendance and gradebook features?
Yes, attendance tracking and a full markbook/assessment gradebook are among Gibbon's roughly two dozen core modules.
Can schools customize Gibbon?
Yes, because Gibbon is open source, schools with developer resources (or hired contractors) can build custom modules on top of the core platform.
How is Gibbon different from commercial school management systems?
Unlike commercial SIS platforms like PowerSchool or Veracross, Gibbon has no licensing fees; schools instead pay only for their own hosting and optional support.