ToneBytes FM-Four is a simple FM synthesizer VST instrument with some improvements like YAMAHA OPL/OPL2 chipsets. FM-Four can produce wide variety of timbres that are rich in harmonics.
Main features:

• 8 FM Algorithms
• 64 factory presets
• Built-in preset manager with ability to patch name editing
• 4 operators with coarse and fine tuning
• 8 wave types (Sinus, Half-sinus, Abs-sinus, Quarter-sinus, Square, Triangle, Half-triangle, Abs-triangle)
• Multimode LFO synced with BPM and with Random mode
• 4 filters
• 8 stage envelope generator for multimode modulator
• Chorus, Distortion and 10 bands equalizer
• Easy control with pop-up menus

Watch FM Four Video Demo

FM Four is a vst instruments plugins developed by ToneBytes , a free FM Synthesis VST plugins that you can use on any VST Compatible hosts such as Steinberg Cubase, Nuendo, Wavelab, FL Studio/Fruityloops, Ableton Live, Adobe Audition, LMMS, Reaper, SONAR, Mixcraft, Acid Pro, etc.
For more information about FM Four please visit Developer Website