Spek Overview
Spek is an open source acoustic spectrum analyzer for Windows, macOS, and Linux. This page now links directly to the official Spek 0.8.2 GitHub release assets, including the Windows MSI, macOS DMG, Linux source archive, and portable ZIP. Spek visualizes audio frequency content and helps inspect recordings, transcodes, and compressed files. It is useful for audio engineers, archivists, and music collectors who need a lightweight local analysis tool. The installer files can be saved once and reused on machines where browser access is restricted or where the same tested release needs to be deployed repeatedly. To install offline: download the package for the target platform, copy it to local storage, and run the installer or extract the archive on the destination machine. The Spek offline installer packages the full setup for Windows/macOS/Linux as a standalone installer, so the complete audio toolset is ready after one install with no further internet activity required.