BetterTouchTool is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux alternative is Repeat, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to BetterTouchTool and four of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to BetterTouchTool are QuickTile (Free, Open Source), touchegg (Free, Open Source) and PyGrid (Free, Open Source).
Repeat is a full-fledged, Java mouse/keyboard record/replay and automation hotkeys/macros creation using modern programming languages, and more advanced automation features. Working across three major OSes: Windows, OSX, and Linux.
Touchégg initially going to be designed to provide Egg Window Manager window management through gestures, but eventually I decided to extend this funcionality, so Touchégg is compatible with any window manager, and providing more options.
PyGrid is a small utility which allows you to easily organize your open windows by tiling, resizing and positioning them to make the best use of your desktop real estate. It's easy to configure and supports multiple monitors.