KPortScan

 Works with any ports
Works with list of ranges
Multithreaded (up to 1200 streams)
Increased speed of the scanner. Synthetic tests the speed was above the speed of vnc scaner 6 times with the same number of threads.
Eats little resources(5-10% percent and 15-25 MB of memory(memory does not leak))
Displayed the status of the scan in the progress bars
Added the ability to save the results without specifying the port, and specifying
Completely rewritten flows, it's now completely stable, which will keep your dedicated server safe and sound
Changed the layout of the window
Download of the ranges with proxysecurity.com
Added counter hoods
Fixed minor bugs in the application logic

Mode selection save the file:
with port — stores the port
without port leaves port
append to file — appends the new results to previous results are in the file
clear file and add — remove previous results saved in the file and writes new results into a clean file.

The choice of stop mode:
Fast stop — Stops the scanning immediately without dokonywania range
Slow stop — Stops the scanning dokonywanie range