Question: Is there a way or a program that marks the icon of a file with a badge, similar to how Dropbox marks synced files with a green checkmark, and files that are currently syncing blue?

I'd use that to mark videos I've watched in a series.

Answer: 
I couldn't find a better solution, so I've created an open-source project for that. Available at <https://github.com/csomakk/IWatchSeriez>
Its nothing special yet, but it does the trick, and I'll try to work more on it. I Watch Seriez, IWatchSeriez :)

![enter image description here](https://i.stack.imgur.com/CmmqI.png)
You can try something like [**UserInfoTip**](http://www.akslab.com):

> 
> * Select some files or folders, assign icons for them, and add a description to be displayed in Explorer's popup windows.
> * You can easily notice the marked files among other files and recognize their types by the icons.
> 
> 
> 

![1](https://i.stack.imgur.com/7MMul.jpg)  

![2](https://i.stack.imgur.com/o2q6s.jpg)  

![3](https://i.stack.imgur.com/WcouI.jpg)

---

Of course, nothing prevents you from [creating an Icon Overlay Handler](http://msdn.microsoft.com/en-us/library/cc144123%28VS.85%29.aspx) of your own. You can get started by using [TortoiseSVN](http://tortoisesvn.tigris.org/ExplorerIntegration.html)'s [code](https://stackoverflow.com/questions/843506/shell-icon-overlay-c), but remember that there's [a 15 overlay limit](https://stackoverflow.com/questions/4411336/shelliconoverlayidentifiers-why-so-few) (which will get exhausted in no time if multiple programs attempt to set overlays), and icon overlays are not even recommended by people such as Raymond Chen.