head to head · open source
OpenProject vs invobook
OpenProject has 16,933 GitHub stars, 3,676 forks, 224 open issues and last shipped yesterday. invobook has 2,235 stars, 607 forks, 9 open issues and last shipped 3 days ago. OpenProject leads on adoption by 658% (16,933 vs 2,235 stars). OpenProject is written in Ruby under GPL-3.0; invobook is written in Blade under MIT. OpenProject has attracted 22% as many forks as stars, invobook 27%. OpenProject was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenProject | invobook | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 2.2K |
| License | GPL-3.0 | MIT |
| Written in | Ruby | Blade |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 3.7K | ⑂ 607 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenProject if
- You weight community size — 17K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick invobook if
- You want the invobook feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Blade
- You evaluated both and invobook fits your workflow better
About OpenProject
OpenProject We empower teams to achieve great things together for the good of society. OpenProject is a web based open source project management software for teams and organizations that require transparency, flexibility, and data sovereignty. Manage projects, portfolios, products, tasks, bugs, agile workflows, roadmaps, and team collaboration in a single platform. OpenProject can be self hosted and is designed for organizations looking for an open source enterprise ready alternative to tools such as Jira, MS Project, Monday, Asana, YouTrack while maintaining full control over their data and infrastructure…
read the full OpenProject overview →
About invobook
InvoBook Self hosted app for Time Tracking, Invoice Generation, Project & Client Management, built with Laravel & Filament. Hire me I'm available for contractual work on this stack (Filament, Laravel, Livewire, AlpineJS, TailwindCSS). Reach me via email or discord About Invobook Invobook is a self hosted app to manage team/clients, project & tasks, time tracking, create and sending invoice and more. It is build upon Filament and TALL stack. Installation Screenshots Contributing Supporting Credits License Installation Clone the repository Set env variables Install composer packages Screenshots ↑Top Contributing…
read the full invobook overview →
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Frequently asked questions
Is OpenProject or invobook more popular?
OpenProject has 16,933 GitHub stars and invobook has 2,235. OpenProject has the larger community by that measure.
Are OpenProject and invobook free?
Both are open source. OpenProject is licensed under GPL-3.0 and invobook under MIT. Neither carries a licence fee.
What is the difference between OpenProject and invobook?
OpenProject is written in Ruby and invobook in Blade. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenProject or invobook?
Choose OpenProject if you want the larger community (16,933 stars) or its GPL-3.0 licence terms. Choose invobook if its feature set, stack or MIT licence fits better. Both are self-hostable.