Jesus Christ, this question starts to annoy me.
One more time: THIS IS NOT FULLSCREEN! This is the feature if my plugin (credits to zygorator here), it reduces the borders of the window and maximazes it, so it looks quite like fullscreen. But technically, it's still in windowed mode, so you can alt+tab easily, use hacks overlays, but vsync and ingame brightness settings are obviously unavailable.
I only can write scripts for Autohotkey ATM, so I can't create 'real' hacks like aimbot/wallhack and so on. I wrote some scripts for CSS and HL2DM for personal use, but didn't release them, because not sure they are useful enough. For example, I have scrips for bhopping for HL2DM (too bad bhopping in CSS was reduced after patch) and customizable crosshair script written for CSS (but it also works in any other game). The crosshair is 19x19 pixels, every pixel can have diferent color (black, white, red, yellow, green, cyan, blue, magenta); also the position of it can be adjusted/return to center if you need. I'm planning to add different transparency for each pixel and a feature to remember settings for each game separately, then I'll probably release it in CSS forum.