- It is a great tool for archiving. Especially in Windows, it is often faster to compress a rar archive than copying several hundreds of files. This fills the lack of a `tar` tool in Windows space.
- It supports changing the compression level during the compression.
- Highly backwards compatible format. The newer rar format is opt-in.
- WinRAR supports various formats such as ISO, JAR, and a few typical zip-ish formats.
- Superior drag and drop support.
- Context-aware extraction. For example, if you double click a PNG, it only extracts that PNG file. For an exe, it extracts the whole thing.
- Splitting files, locked archives, AES protection, SFX, and other features are easily accessible.
I use 7-zip for zstd, and brotli cli when I particularly need those formats. For my personal archives, rar format and WinRAR never let me down.
Yes, I get that it's not an open source software and doesn't come with a permissive license, but neither do Windows OS itself, and many other software I use. There is an open source unrar, so I don't fear being locked out on my archived.
I happily paid the $29 even though I could absolutely use it without paying a dime, just like thousands of other users.