While apturl is great (I use it too) to install software into the realm of the ($Debian-only!) package management system (which requires root privileges), here is another project that strifes to become the most easily used to make use of additional software in userspace (no need to have 'root'), and cross-platform (not limited to the Debian family of OSes, but _all_ Linux distros):
Another "single click" software enabler: klik
While apturl is great (I use it too) to install software into the realm of the ($Debian-only!) package management system (which requires root privileges), here is another project that strifes to become the most easily used to make use of additional software in userspace (no need to have 'root'), and cross-platform (not limited to the Debian family of OSes, but _all_ Linux distros):
--> klik
Here is a screencast of the current 'klik2' (codename) development effort.
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Use software without "installation". http://klik.atekon.de/