Extensions, scripts, themes for FoldingText 2 — Direct, App Store.
Each plugin is described in its own README file (inside each plugin folder).
To install a plugin, drag its .ftplugin folder into your FoldingText Plug-Ins folder. Open this folder from within FoldingText with the menu command File > Open Application Folder. The plugin will then be loaded in all subsequently-opened files (close a file and reopen it to load the plugin).