Info-ZIP Home Page Overview & Contact Data

Info-ZIP is a long-standing, Internet-based workgroup that provides free, portable versions of the Zip and UnZip compressor-archiver utilities. Formed in 1990 as a mailing list, the project maintains tools for creating, extracting, inspecting, and modifying zipfiles, with a focus on compatibility with the DOS-based PKZIP format used by PKWARE. The site serves developers, system administrators, archive users, and platform maintainers who need dependable zipfile handling across Unix, Windows, VMS, OS/2, Mac OS, AmigaDOS, and many other operating environments. The workgroup includes maintainers from multiple countries and a history of beta testing, giving the project a collaborative, open-source character. The project publishes release notes, documentation, download locations, and support materials for Zip, UnZip, WiZ, and MacZip. It also includes utilities such as ZipInfo for detailed zipfile information, fUnZip for pipe-based extraction, UnZipSFX for self-extracting archives, ZipNote for comments, ZipSplit for splitting archives, and ZipCloak for encryption-related tasks. The site functions as a practical reference for zipfile documentation, version history, license terms, mailing lists, and related compression resources, making it useful for anyone working with archive formats or evaluating Info-ZIP releases. What makes Info-ZIP notable is its broad platform support and its influence on widely used compression technology. The primary compression engine has been spun off into the free zlib library, which appears in Linux, Windows, Java, PNG software, and web browsers. Info-ZIP code has also been incorporated into third-party products, including WinZip, DynaZIP, PGP, and earlier IBM, Sun, Novell, and SAP software. For readers seeking zip info, release history, or detailed zipfile documentation, the site remains a recognizable resource in the archive and compression community.