Skim is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Okular, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Skim and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Skim are Xournal++, Evince, MuPDF and Linwood Butterfly.
Multi-platform document viewer supporting PDF, ePub, comics, images, and Markdown with annotation, digital signature verification, tabbed interface, sidebar navigation, text selection, text-to-speech, magnifier, search, dark mode, and plugin support.
Germany
EU
Handwritten note-taking and PDF annotation using pen input and pressure sensitivity, shape drawing, customizable toolbar layouts, image insertion, audio recording, multi-language options, LaTeX integration, and complete export in PDF or PNG formats across all platforms.
Supports viewing and editing PDF annotations, displays multiple formats such as PDF, Postscript, DjVu, comic books, TIFF, DVI, XPS, remembers per-document zoom and position, features search, table-of-contents navigation, SyncTeX integration, and printing.
United States
MuPDF offers a highly versatile PDF, XPS, and eBook interpreter, customizable as a renderer, viewer, or toolkit. Features include digital signatures, redactions, form filling, annotations, and page manipulation, ideal for mobile, eBooks, and embedded apps supporting Java, C++, and Python.
United States
Butterfly is a note-taking app where your ideas come first. You can paint, add texts, and export them easily on every device. This app works on android, windows, linux, and in the web.
GermanyEU
Sioyek is a PDF viewer with minimal interface optimized for reading research papers and technical books.
United States
High-performance viewer for documents and images offering split tabs, customizable single or book layouts, portals for side-by-side sections, instant search, line highlight, annotation tools, link hints, searchable highlights, session management, and TOML config.
SpainEU
Master PDF Editor is complete solution for editing PDF and XPS files. You can insert, edit, remove, copy, add images or graphics. Export, import, remove and change page layouts. Also Master PDF Editor provides full functionality for changing PDF information, including author...
Russia
Create, Convert, Review and Edit PDF Documents on Windows, macOS, and Linux.
United States
JOPDF is a 100% free PDF editor for Windows, Mac, and Linux. Edit, compress, merge, convert and annotate PDFs with no watermark or signup required.
Open-source PDF viewer and editor using Qt framework, featuring hardware-accelerated rendering, encryption, multithreading, text-to-speech, annotation tools, form filling, high-res monitor support, document compression, audio book conversion, and signature validation.
CzechiaEU
A document viewer for the GNOME desktop. You can view, search or annotate documents in many different formats.
United States
