Kawaks is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux alternative is RetroArch, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Kawaks and three of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Kawaks are Mame (Free, Open Source) and Nostlan (Free, Open Source).
What is RetroArch? RetroArch is a modular multi-system emulator system that is designed to be fast, lightweight, and portable. It has features lacking in some emulators frontends, such as real-time rewinding and game-aware shading. What systems does it play?
MAME stands for Multiple Arcade Machine Emulator. When used in conjunction with images of the original arcade game's ROM and disk data, MAME attempts to reproduce that game as faithfully as possible on a more modern general-purpose computer.
A front-end or user interface (UI) is the presentation and interaction layer of an app or website. Most modern emulator apps have basic game list UIs that you can interact with using a mouse/keyboard but not a game controller.