<blockquote>List of sites with Two Factor Auth support which includes SMS, email, phone calls, hardware, and software.</blockquote>

"KSimus is a KDE tool for simulation, automatization and visualization of technical processes. It is also useful for education and experiments in the scope of logical and automatic control circuits. The main feature of KSimus is the use of component libraries, the so called component packages. Because this, KSimus is easy to extend with new components or to new areas of application."

"The blist is a drop-in replacement for the Python list the provides better performance when modifying large lists. The blist package also provides sortedlist, sortedset, weaksortedlist, weaksortedset, sorteddict, and btuple types."