OpenWith

A macOS app for managing file type associations. View, search, and change default application handlers for file extensions.

Features

• Browse all registered file extensions from Launch Services
• Filter by category (Documents, Code, Images, Audio, Video, Archives)
• Filter by application
• Fuzzy search for extensions, UTIs, or app names
• Change default handlers with a single click

Installation

Download the latest DMG from Releases, open it, and drag OpenWith to Applications.

Gatekeeper Warning

Since the app isn't notarized, macOS may show a warning. To open it:

Option 1: Right-click the app and select "Open"

Option 2: Remove quarantine attribute:

xattr -cr /Applications/OpenWith.app

Building from Source

Requires macOS 26+ and Swift 6.2.

# Clone
git clone https://github.com/rhnorskov/open-with.git
cd open-with

# Build
swift build -c release

# Run
swift run

License

MIT