head to head · open source
LibreOffice vs PDF4QT
LibreOffice has 4,375 GitHub stars, 945 forks, 0 open issues and last shipped yesterday. PDF4QT has 1,477 stars, 145 forks, 32 open issues and last shipped yesterday. LibreOffice leads on adoption by 196% (4,375 vs 1,477 stars). LibreOffice is written in C++ under GPL-3.0; PDF4QT is written in C++ under MIT. LibreOffice has attracted 22% as many forks as stars, PDF4QT 10%. PDF4QT 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
| LibreOffice | PDF4QT | |
|---|---|---|
| GitHub stars | ★ 4.4K | ★ 1.5K |
| License | GPL-3.0 | MIT |
| Written in | C++ | C++ |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 945 | ⑂ 145 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LibreOffice if
- You weight community size — 4.4K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick PDF4QT if
- You want the PDF4QT feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C++
- You evaluated both and PDF4QT fits your workflow better
About LibreOffice
LibreOffice is an integrated office suite written in C++ and distributed under GPL 3.0. It lives in the open source productivity and office suite ecosystem, and it positions itself as an open alternative to Microsoft 365. The Document Foundation backs the project as a community of enterprises, developers, and volunteers.
read the full LibreOffice overview →
About PDF4QT
PDF4QT is an MIT licensed, cross platform PDF toolkit for Windows and Linux that combines dedicated desktop applications — a viewer, editor, page manipulator, document diff tool and command line utility — with a C++/Qt PDF rendering engine built against the PDF Reference 2.0, and it is aimed at end users, developers and integrators who need PDF handling they can inspect, modify and redistribute without licence friction.
read the full PDF4QT overview →
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Frequently asked questions
Is LibreOffice or PDF4QT more popular?
LibreOffice has 4,375 GitHub stars and PDF4QT has 1,477. LibreOffice has the larger community by that measure.
Are LibreOffice and PDF4QT free?
Both are open source. LibreOffice is licensed under GPL-3.0 and PDF4QT under MIT. Neither carries a licence fee.
What is the difference between LibreOffice and PDF4QT?
LibreOffice is written in C++ and PDF4QT in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, LibreOffice or PDF4QT?
Choose LibreOffice if you want the larger community (4,375 stars) or its GPL-3.0 licence terms. Choose PDF4QT if its feature set, stack or MIT licence fits better. Both are self-hostable.