OpenIn is a powerful macOS link and file opening management tool that allows users to freely choose which application to open links, emails, and files with, solving the inconveniences caused by the system’s default applications. Whether you are using multiple browsers or email clients simultaneously, or using different software for work and personal life, it helps you build a more flexible and efficient workflow.
OpenIn supports setting opening rules for different types of links and files. For example, you can specify that a certain website always opens in a specific browser, have `mailto` email links open directly in webmail services like Gmail, Outlook, Fastmail, or have Zoom invitations automatically launch in the Zoom app. Additionally, it can intelligently select the corresponding application based on conditions such as domain, path, source application, keyboard shortcuts, and macOS Focus modes.
For file management, OpenIn can replace the system’s default “Open With” feature, providing an application selection list when opening files, and supports setting independent rules for different file extensions. Users can freely adjust the display order of applications, or set the action to open the folder containing the file instead of opening the file directly, thereby improving work efficiency.
To meet the needs of advanced users, OpenIn features a built-in JavaScript engine that supports writing custom scripts and rules. Through private APIs, it can achieve more complex automation logic, giving the application extremely high extensibility.
OpenIn also offers a local history feature that automatically saves previously opened links and files, making it easy for users to quickly find and revisit them. At the same time, it places great emphasis on security and privacy, supporting phishing protection, link previews, URL tracking parameter removal, and the option to open links using Safari Private Browsing or Chromium Incognito Mode, further protecting user privacy.
The latest version adds support for more URL schemes, allowing unified management of various protocols such as Mail, Call, Terminal, Git, IDE, Remote Tools, and Calendar. It can also set OpenIn as the default opener for Unix executable files and scripts, automatically invoking the specified terminal to run them. The new version also integrates Apple Intelligence phishing detection, which can identify suspicious links in the background and promptly alert users, while supporting trusted domain management and custom detection strategies.
Furthermore, the new version further enhances the history feature, allowing users to view the complete link processing workflow, including the source application, matched rule, target application, Focus mode, and security detection results. It also adds support for browser configurations such as Zen Browser and Helium Browser, and improves details like Safari Profiles, Focus mode handling, short link resolution, and the application selection window.
OpenIn is fully developed in Swift, making it a native macOS application that supports both Intel and Apple Silicon platforms. OpenIn 4 is compatible with newer macOS systems and can automatically migrate data from OpenIn 3, making the upgrade process simpler and safer. Overall, OpenIn is an efficiency tool that combines link management, file opening, custom rules, automation, and security protection, making it ideal for Mac users with complex workflows who need to use multiple applications and browsers simultaneously.
