Google решил открыть код своего Google Update, чтобы любой open source проект мог обновлять свой софт через него, встечайте — проект Omaha:

Omaha, otherwise known as Google Update, is a program to install requested software and keep it up to date. So far, Omaha supports many Google products for Windows, including Google Chrome and Google Earth, but there is no reason for it to only support Google products.

We know that keeping software updated is both important and hard, and so by open-sourcing this project, our hope is that perhaps we can help others solve this problem. So, if you’d like to get involved, or even use Omaha to support your own software projects, then just follow the instructions in the Getting Started guide below, and you’ll be good to go!