WinArun is the Windows GUI-based interpreter for Alan. It will run your game in a window with graphics. It requires Glk.dll (included). Packaged with a Windows installer.
Gargoyle is a multi-format player which exists for a number of platforms including Windows. Distributions of Gargoyle includes an Alan interpreter but to upgrade that to more recent versions you need to run this updater which will identify and install a slot-in replacement inside your Gargoyle installation.
Gargoyle is a multi-format player which exists for a number of platforms including MacOS. Distributions of Gargoyle includes an Alan interpreter but to upgrade that to more recent versions you need to download this updater which will install an updated slot-in replacement. NOTE the updater assumes that you have a Gargoyle.app in /Applications where it will place the update.
Simple text-only mode Alan interpreter for MacOS packaged as an application. Prompts for a game and opens it inside a terminal so that you don't have to fiddle with commands to start playing.