Task.ly used to be an easy-to-use online to-do list and task manager. The startup started in 2009 when it gained most of its hype, but unfortunately, the company died out due to its inability to profit from the software.
The product offered some fairly obvious features that make a task management app kick butt. A few of the features were like having a desktop-like user interface even though it’s web-based, supporting SMS reminders and communication with the app via IM, and having an accompanying iPhone app. Task.ly was originally charging $4/month for the service, which could be the reason why they weren't making much cash flow from the app.
However, take a look at the original pitch deck they used to raise money and get recognition in the first place.