Sytrus is a software synthesizer included in the digital audio workstation FL Studio.

Sytrus provides a large number of adjustments and controls, including shape shifting, harmonics editing, EQ, a modulator (which can control almost any parameter), several filters, reverb, delay, unison, detune, etc.

[1] The second version of Sytrus (introduced with FL Studio 6), comes with an array of presets covering many types of sounds.

[2][3] When clicking on the Sytrus logo in "Show Info", the Hint Bar at the top says "Don't even think about it you fruit-clicking pervert!".

At this stage, the modulator grid changes to green rather than the standard blue.