The mousetweaks are being implemented as a Google Summer of Code project. The mousetweaks offer systemwide dwelling and delayclick (i.e. opening the contextual menu with a left click and hold).
You can find version 0.1.0 on the developers blog. However, I will attach a more recent version to this post, namely version 0.1.2.
Please keep in mind that this software is currently in development and consequently may not work properly. If you decide to use it, it is at your own risk.
Nevertheless, if you are trying it, don't hesitate to post any comments or suggestions.
Here are a few known issues:
- dwelling ctw mode: grab icon does not always show up; for example it does not show up on the scrollbar
- gesture mode: cannot open programs from within applications menu; this is a major show stopping.
- delay click does not work in Firefox, but works in epiphany
PS: You have to compile the mousetweaks yourself, as there is no debian package available yet.