7-Zip: Free, Powerful File Compression for Windows, Linux, and Mac

7-Zip is a free and open-source file compression and decompression software. It's widely used to compress files into smaller sizes, making them easier to store and transfer. 7-Zip supports a wide range of file formats and has a high compression ratio, which means it can create smaller archives compared to other compression tools. It also supports encryption and password protection for added security. 7-Zip is available for Windows, Linux, and Mac operating systems and is known for its simplicity and efficiency.