Download Mantissa
Free, no account required. Cross-platform Windows / macOS / Linux builds are produced from the same Python / Qt source by a single GitHub Actions workflow — all three are published together on every tagged release.
Select your platform:
Pick your platform above to get the download link, SHA-256 checksum, and first-run notes.
Windows 10 / 11 (x64)
Run it — installs per-user (no admin prompt) with a Start-menu entry, and updates replace the install in place.
Prefer a portable version (no installer)?
Download Mantissa-0.1.0-windows-x64.zip,
unzip anywhere, and run Mantissa\Mantissa.exe.
SHA-256 checksum
A plain-text Mantissa-0.1.0-windows-x64-setup.sha256.txt file is published alongside the
download with the expected hash. In Command Prompt or PowerShell, run
certutil -hashfile Mantissa-0.1.0-windows-x64-setup.exe SHA256 and confirm the output
matches.
Good to know
- Windows SmartScreen may show a warning the first time you run an unsigned download. Click More info → Run anyway. Code-signing is on the roadmap.
- Preferences live in
%APPDATA%\Mantissa\— uninstalling Mantissa is a clean folder delete.
macOS (Apple Silicon)
brew install --cask mreza-n/mantissa/mantissa
Installs Mantissa.app into /Applications —
open it from Launchpad or the Applications folder. Update later with
brew upgrade --cask mantissa.
Don't have Homebrew installed?
Install it once — paste this into Terminal — then run the command above:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" Prefer a manual install (no Homebrew)?
Download Mantissa-0.1.0-macos-arm64.zip, unzip
it, and drag Mantissa.app into
/Applications. Because the download isn't notarized
yet, macOS quarantines it — clear that once so it launches
cleanly:
xattr -dr com.apple.quarantine /Applications/Mantissa.app (Or, instead of the command, right-click the app → Open → Open the first time — Finder remembers it after that.)
SHA-256 checksum
A plain-text Mantissa-0.1.0-macos-arm64.sha256.txt file is published alongside the
download with the expected hash. In Terminal, run
shasum -a 256 Mantissa-0.1.0-macos-arm64.zip and confirm the output
matches.
Good to know
- Preferences live in
~/.config/mantissa/— uninstalling Mantissa is a clean folder delete.
Linux (x86_64)
tar -xzf the archive, then ./Mantissa/Mantissa.
SHA-256 checksum
A plain-text Mantissa-0.1.0-linux-x64.sha256.txt file is published alongside the
download with the expected hash. In a terminal, run
sha256sum Mantissa-0.1.0-linux-x64.tar.gz and confirm the output
matches.
Good to know
- Linux:
chmod +xthe extracted binary if your shell doesn't preserve the executable bit (many GUI extractors do). - Preferences live in
~/.config/mantissa/— uninstalling Mantissa is a clean folder delete.
What's inside
- Mantissa shell with three modes: Wave Compare, Debugger, Web (landing + tools + tutorials).
- Bundled Python 3.11 runtime, PySide6 (Qt 6), pyqtgraph.
mld-nativebinary for the Wave Compare mode (BS.1387 MLD calculator, built in CI for each platform).- The same tools you've been using in your browser, fully offline.
For a full version history (and previous-version downloads), see the release notes on GitHub.