4sync vs SumatraPDF
A side-by-side look at 4sync and SumatraPDF. For an in-depth review of either product, follow the links below.
4sync
Backup & Sync
4sync is a free file synchronization and backup software for Windows, macOS and Linux. It allows easy syncing and backup of files and folders between devices or to external drives. Useful for keeping important files up-to-date and backed up across PCs and devices.
file-syncbackupcrossplatform
SumatraPDF
Office & Productivity
SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.
pdfebookreaderlightweightopensource
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