You can write your own plugins for Subtitle Edit in any .NET language.

At the moment plugins can be made in these menus: File, Tools, Sync, Translate, Spell check.

A new subtitle format can also be added via a plugin.

If you want to extend Subtitle Edit somewhere else, please open an issue.

Please compile the plugins for the "Any CPU" platform.

Framework version: If possible compile with .NET 4.0 (can be used with 4+).

Use Nikse.SubtitleEdit.PluginLogic as Entry point namespace, take a look here.

The DLL filename must be <classname>.dll - e.g. SyncViaOtherSubtitle.dll.