The TexturesPacker

The TexturesPacker (Yes, I know that's weird writing) is a tool for all the Texture Pack Designers out there. It does the stuff you are too lazy to do, I guess.
Unless you suggest new features, I will not add to this program anymore.
If you want something added, just post it in the comments, and I'll have a go.

Download at MediaFire

What exactly does it do?

It's very simple to describe:

Get all the textures from a given directory
Zip them up to a neat little package
Copy that package somewhere you want
Put a copy of the package to your Minecraft's texturepack folder

What do you need to do to use it?

You only need to download the executable from MediaFire, start it, choose the different paths and then press the cute little button saying "Start".

What did I use to make it?

I used Python version 2.7 with the Tkinter module to create the GUI and I also used some other modules for file management.

Download at MediaFire