jRelease
It's specifically designed to be simple but VERY effective, no millions of options, just what you really need, nothing else!
The main purpose is to be used as Joomla extensions manager, as timesaver for joomla developers, but you can use it as software release manager or as a generic download component.
some of the cool features:
- Autopopulate from folder. you can simply upload the files in the specified folder and the component will autopolate itself
- Autogenerate the "update server file" for the joomla update "one click" feature
- native bootstrap style