7-Zip is a free and open-source file archiver utility known for its high compression ratio and support for numerous archive formats. It offers a user-friendly interface and powerful features, including file encryption, self-extracting archives, and integration with Windows Explorer. 7-Zip employs the LZMA and LZMA2 compression algorithms, which provide excellent compression while maintaining compatibility with other compression utilities. With its efficient compression and decompression speeds, 7-Zip is a popular choice for both personal and professional use. It's available for Windows, Linux, and macOS, making it a versatile and reliable tool for managing and compressing files and folders.