Installation

Download the latest version from the Releases page and follow the instructions for your operating system.

Windows

Download Columnar_x.x.x_x64-setup.exe or Columnar_x.x.x_x64.msi from the releases page.

Using the .exe installer:

1. Double-click the downloaded file.
2. If Windows SmartScreen shows a warning, click More info → Run anyway.
3. Follow the installer steps.
4. Columnar will appear in your Start menu.

Using the .msi installer:

1. Double-click the .msi file.
2. Follow the Windows Installer prompts.

Note

The SmartScreen warning appears because Columnar is currently unsigned. This is expected for open-source applications without a paid code signing certificate. The app is safe to run.

macOS

Download Columnar_x.x.x_aarch64.dmg from the releases page.

Note

Columnar supports Apple Silicon only (M1, M2, M3, M4 series). Intel Macs are not supported.

1. Open the downloaded .dmg file.
2. Drag Columnar.app into your Applications folder.
3. On first launch, macOS Gatekeeper may block the app.

If Gatekeeper blocks the app:

1. Right-click (or Control-click) Columnar.app in Applications.
2. Select Open from the context menu.
3. Click Open in the dialog that appears.
4. On subsequent launches, the app will open normally.

Note

Gatekeeper blocks unsigned apps from unknown developers. As with the Windows SmartScreen note, this is expected for unsigned open-source software.

Linux

Two formats are available. Choose whichever suits your distribution.

AppImage (universal):

chmod +x Columnar_x.x.x_amd64.AppImage
./Columnar_x.x.x_amd64.AppImage

Debian/Ubuntu (.deb):

sudo dpkg -i Columnar_x.x.x_amd64.deb

After installing the .deb, launch Columnar from your application menu or run:

columnar

Tip

The AppImage requires no installation and runs on any x86_64 Linux distribution. It is the recommended option if you are unsure which format to use.

System requirements

Platform	Requirement
Windows	Windows 10 or later, WebView2 runtime (included in Windows 11, auto-installed on Windows 10)
macOS	macOS 11 (Big Sur) or later, Apple Silicon
Linux	Any modern x86_64 distribution with WebKitGTK

Uninstalling

Windows

Go to Settings → Apps → Installed apps, find Columnar, and click Uninstall.

macOS

Drag Columnar.app from Applications to the Trash.

Linux

For .deb: sudo apt remove columnar
For AppImage: delete the .AppImage file.