VO Manager is a voice-over and subtitle manager that helps developers rapidly create and prototype games with audio and subtitles in Unity. It streamlines the process of playing audio and subtitles without creating a complex system.
The pro version comes with a set of tools that allows you to add audio and edit subtitles without having to use the inspector each time. Cut down the amount of time you spend dragging and dropping audio and instead amplify your experience using the built-in editor windows.
You can purchase the asset package on the Unity Asset Store at http://u3d.as/1ee5.
If you would like to try it out before you buy it, the lite version is also available on the Unity Asset Store. With the lite version, you’ll be able to perform some of the same advanced functionality behind the VO Manager. The differences are that the lite version does not contain any of the built-in editor windows as well as the multi-subtitle setup.
The lite version can be downloaded on the Unity Asset Store at http://u3d.as/ono.
There is also a GitHub repository available for the lite version via https://github.com/tvledesign/vo-manager-lite.