Get FathomDB

macOS

$ curl -fsSL https://fathomdb.dev/install.sh | bash

Downloads the latest release, installs FathomDB, and puts fathom and fdb on your PATH — per-user, no admin. Read install.sh before you run it.

Or download the app directly

Open the .dmg and drag FathomDB to Applications.

First launch on macOS. Builds aren't notarized yet, so Gatekeeper may say the app "can't be opened". Right-click the app and choose Open, or run xattr -dr com.apple.quarantine /Applications/FathomDB.app. Signing is on the roadmap.

Windows

> irm https://fathomdb.dev/install.ps1 | iex

Downloads the latest release, runs the installer, and puts fathom and fdb on your PATH — per-user, no admin. Read install.ps1 before you run it.

Or download the installer directly

First launch on Windows. The build isn't code-signed yet, so Microsoft Defender SmartScreen may warn about an unrecognised app — choose More info then Run anyway. Signing is on the roadmap.

Linux

$ curl -fsSL https://fathomdb.dev/install.sh | bash

Downloads the latest AppImage, installs it under ~/.local/share/fathomdb, and puts fathom and fdb on your PATH. Read install.sh before you run it.

Or download the app directly

chmod +x FathomDB-*.AppImage && ./FathomDB-*.AppImage (add --appimage-extract-and-run if your distro has no libfuse2).