Creating reminders in the Mountain Lion Reminders app via Alfred.
It’s not 100% natural language because it has to have a period to separate the task and the reminder time and it also gets a little quirky on the times (depending on what you enter), but it works for the most part. It works for times like “20 minutes” as well.
I work hard and spend a lot of time on the Alfred extensions I've created. I make a lot of custom extensions for users as well. I really enjoy helping the Alfredapp team and all of its awesome users. Any donations you want to send my way for any of the work I've done would be greatly apperciated