Apps similar to Sioyek include SumatraPDF, which is free and open source. Other options are Okular, Foxit PDF Reader, Evince and MuPDF. You're spoiled for choice with PDF Readers like Sioyek: we list more than 50 alternatives for Windows, Mac, the web, Linux and Android.
PDF Guard is a PDF editor that runs inside the browser tab and processes documents on your own device instead of uploading them. Files are read from disk into the tab's memory, handled by engines that run locally - pdf.
A free-floating 2D Canvas for processing multiple PDF files simultaneously.
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PDF Max is a desktop class PDF app for reading, annotating or signing PDF documents on your iPhone/iPad. Mark up documents with highlights and handwriting, insert texts and stamps, fill out, sign PDFs and even manipulate PDF pages.
ReamPDF is a desktop PDF toolkit built for speed and simplicity. Merge, split, compress, and convert PDFs without uploading your files to the cloud. The Convert tool accepts images including WebP, a format most PDF tools don't support.
Australia
Bookmark PDF is a free, browser-based tool designed to simplify the process of adding, editing, and organizing bookmarks in PDF files. Unlike traditional tools, Bookmark PDF operates entirely online, ensuring maximum privacy and security for your documents.
A free, open-source PDF editor for Windows, macOS and Linux: lightweight, fast, and designed with care.
FeatherPDF is a fast, lightweight native Windows app to view, merge, split, reorder, rotate PDF files 100% offline and private.
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Unlock the potential of your PDF documents with PDFquiz.ai, the leading PDF to quiz converter. Effortlessly convert PDF to quiz with our AI quiz generator and AI test maker.
Free, privacy-first collection of 95+ PDF tools that process files entirely in your browser using WebAssembly. No uploads required - your documents never leave your device.
United States
Nettongia PDF Editor is a free and open-source PDF editor for Windows that processes documents locally without uploading them to a server. It allows users to edit existing text, add and modify images, reorder, rotate or delete pages, create and insert signatures, search...
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Stop overpaying for PDF tools.
Every PDF tool you need. One price. Forever.
15 tools. Runs on your machine. Never touches a server. No subscriptions. No uploads. No nonsense.
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