Types!

FileMenu Tools lets you customize the context (right-click) menu of Windows Explorer. The application adds built-in utilities to perform operations on files and folders and adds customized commands that let users run external applications, copy/move to a specific folder or delete specific file types. With FileMenu Tools, you also can customize the "Send to..." submenu and enable/disable context-menu commands added by other applications.Many very useful additional functions: create symbolic-Links, sync folders with file-deletion in both directions, show the folder-size of all subfolders »

Default Programs Editor is a powerful but simple file association utility for Windows 7, Vista and XP. This free utility has three main functions: context menu editor, auto-play editor, and default programs association editor.

FileTypesMan is an alternative to the File Types tab in the Folder Options of Windows. It displays the list of all file extensions and types registered on your computer.

Context Menu Manager is a collection of utilities bent on providing the necessary means to customize the file association on the system as well as to enrich the context menu for files and folders with new entries.

Context Menu Tuner is an application which allows you to customize Explorer's context menu in Windows 10, Windows 7, 8 and 8.1.

Gunners File Type Editor allows you to you to create/modify various properties for file extensions. Each user can have different properties for a file extension. For example, the default program to open .txt files when you double click on a file with the .txt extension is Notepad. GFTE allows you to change that.

Magic Launch is a preference pane that lets you customize the experience of opening files on your Mac. Open your files using the original application that created them or create custom rules to decide which application should open a file.