The developers of Oni, a text editor, decided to dual license their code on a “time delay” for a new version of the editor, Onivim 2. Its code lives under a proprietary license that requires purchase for commercial use, but every commit converts to open source, under an MIT license, after eighteen months. In this way, Onivim 2’s developers can freely license older versions of the project while charging for access to the newest, most desirable version of the code.
