Source: Wikipedia “List of archive formats”, Library of Congress Digital Formats registry, IANA media-type registry, 7-Zip project docs — see About

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7-Zip vs WinRAR

Illustration of two archive shapes balanced on a weighing scale

A side-by-side feature comparison.

Summary

7-Zip and WinRAR are the two heavyweight Windows archivers. The difference is mainly licensing — 7-Zip is free and open, WinRAR is shareware that nags you to pay — and which native format they prefer.

Bottom line: 7-Zip for free and open. WinRAR if you need to create .rar files or want recovery records.

Feature comparison

Feature 7-zip winrar
Cost Free Paid (trial nags forever)
Open source Yes No
Native format 7z RAR / RAR5
Creates RAR? No Yes
Extracts RAR? Yes Yes
UI polish Functional More polished
Shell integration Excellent Excellent
Compression ratio Best in 7z mode Best in RAR5 mode (similar)

About 7-zip

About winrar

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