Run the installer. Plume installs for everyone in C:\Program Files\Plume, so Windows asks for administrator approval once.
The build is not code-signed yet. If SmartScreen says “Windows protected your PC”, choose More info → Run anyway.
To open every .md file in Plume: right-click one → Open with → Choose another app → Plume → Always. Or use ⋯ → Make Plume the default for .md inside Plume.
macOSApple silicon and Intel
Apple silicon — M1 and laterPlume-1.1.1-mac-arm64.dmg
Plume is not notarized by Apple yet, so the first launch is blocked. Right-click Plume → Open → Open. On macOS 15 and later, try it once, then go to System Settings → Privacy & Security and click Open Anyway.
Still stuck? Run xattr -cr /Applications/Plume.app in Terminal.
To make it the default: select a .md file in Finder → Get Info → Open with: Plume → Change All…
AppImage:chmod +x Plume-1.1.1-linux-x86_64.AppImage, then run it.
Debian or Ubuntu:sudo apt install ./Plume-1.1.1-linux-amd64.deb
On Ubuntu 24.04 and later, prefer the .deb — it installs the AppArmor profile Electron apps need to start there.
Set it as the default through Open With in your file manager.
Not code-signed yet. Windows SmartScreen and macOS Gatekeeper will both warn on first run,
because signing certificates cost money that a free app does not make. Every build is produced
in public by GitHub Actions straight from
the tagged source, so you can check exactly what went into it.
Plume