The best open source alternative to Okular is SumatraPDF. If that doesn't suit you, our users have ranked more than 100 alternatives to Okular and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Okular are PdfCraft, LibreOffice - Draw, KOReader and Koodo Reader.
SweetPDF is a free, open-source PDF editor for Linux and Windows that works entirely offline. No upload, no account, no subscription. Highlight, comment and draw with real PDF annotations; reorder, merge, split and extract pages; fill and flatten forms; add drawn, typed or image...
PDF reader for Windows that fills in and signs forms, adds passwords and watermarks, redacts and makes scanned pages searchable. Open source, works offline.
Norway
ZapPDF is the ultimate privacy-first PDF utility. Whether you are dealing with sensitive financial documents, legal forms, or heavy study materials, ZapPDF gives you the power to manage them instantly—without ever uploading your private files to a random cloud server.
Türkiye
Free, private PDF editor for Windows and Mac: fill and sign, edit text, redact, OCR and organize pages. No account, no ads, no telemetry.
Puerto Rico
