Open-source pdf tools
Replacing: Adobe Acrobat
| Project | What it is | Stars | Last release | Replaces |
|---|---|---|---|---|
| Stirling-PDF Active Mixed or custom | A self-hosted web app for working with PDFs: merge, split, convert, compress, OCR, sign and more. | 95.4k | Oct 24, 2026 | Adobe Acrobat |
| BentoPDF Active AGPL-3.0 | A privacy-focused PDF toolkit that processes files in your browser: merge, split, compress, convert and edit. | 16.2k | Oct 19, 2026 | Adobe Acrobat |
| Xournal++ Active GPL-2.0 | Handwriting and note-taking software that can annotate PDFs, with pen and tablet support. | 15.6k | Oct 27, 2026 | Adobe Acrobat |
| PDF Arranger Active GPL-3.0 | A small desktop app for merging, splitting, rotating, cropping and rearranging PDF pages. | 6.0k | May 23, 2026 | Adobe Acrobat |
| Okular Active Mixed or custom | KDE's document viewer for PDFs and other formats, with annotations and form filling. The GitHub repo mirrors KDE's own servers. | 1.6k | Oct 8, 2026 | Adobe Acrobat |