There are many options
Either you work for Tenable or you don't know about vulnerability scanners. Qualys is a lot bigger than Tenable and it sells an excellent vulnerability scanner (with more features than Nessus and with less false positives than Nessus), Rapid7 also sells an excellent vulnerability scanner, Outpost24 also. Just Google it or maybe you won't even try it because you already knew and are here on "damage control". At least, try to know the industry before you open your mouth.