PDF Editors
Open-source PDF editors
4 of the 46 PDF editors in this directory are open source, according to their own sites.
All of them are free or have a free plan.
Listings checked up to Nov 13, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| PDFsamSplit and merge PDFs offline, with paid Visual and Enhanced editions | Free plan · from $34.90/yr | Yes | macOS, Windows, Linux |
| Stirling PDFOpen-source PDF editor you can run on your own machine or server | Free plan · from $99/mo | Yes | Web, macOS, Windows, Linux |
| SkimFree PDF reader and note-taker for Mac, built for papers | Free | Free | macOS |
| SumatraPDFSmall, free PDF, eBook and comic reader for Windows | Free | Free | Web, Windows |
Common questions
Which PDF editors are open source?
4 of the 46 PDF editors in this directory are open source, according to their own sites. They are PDFsam, Stirling PDF, Skim and SumatraPDF.
When was this checked?
Each listing shows its own date. On this page they run from Nov 12, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.