Picom (formerly a Compton fork) is a standalone compositor for X11 for
window managers without built-in compositing.

Features:
- Rendering with optional VSync via OpenGL or XRender
- Transparent windows, menus, titlebars, borders
- Shadows and colored shadows
- Fading effects
- Bluring of background
- GLSL fragment shader for window contents
- Conditional settings
- Config, log and PID file support
- Remote control via DBus

WWW: https://github.com/yshui/picom