This is a game-management shell for Parchment. It provides a simple sidebar to which you can add mulitple interactive fiction games and switch between them at will. When coupled with htappen's Parchment fork, it will also save all of your game states in your browser, allowing you to resume even between browser sessions.
I have a copy hosted at http://if.sitosis.com that you can use. To add a game, click the "Add Game" button on the sidebar. There is now a built-in search index that allows you to easily find and add any playable game in the IFDB. You can add as many games as you want, and click them in the sidebar to switch between them.
I have packaged the shell up with a copy of htappen's fork at http://if.sitosis.com/ifplayer.zip that you can run from your hard drive. Just download it, unzip, and open up index.html in your browser.