Alternatives to the Free The Tone Silky Groove SG-1C

Maestro Mariner Tremolo

Shared character: modulation, smooth

Boss TR-2 Tremolo

Shared character: high end, modulation, smooth

Spaceman Explorer 6-Stage Phaser

Shared character: modulation, smooth

Maestro PS-1A Phase Shifter

Shared character: high end, smooth

CMATMods Tremoglo

Shared character: modulation, smooth

FTelettronica Satellite Tremolo

Shared character: modulation, smooth, overdrive

Source Audio Mercury Flanger

Shared character: chorus, smooth, studio

JHS Kodiak

Shared character: modulation, smooth

Keeley Seafoam Plus Chorus/Vibrato

Shared character: vibrato, chorus, modulation

Universal Audio Flow Tremolo

Shared character: smooth

Boss CE-2 Chorus

Shared character: chorus, modulation

Electro-Harmonix Eddy Vibrato/Chorus

Shared character: vibrato, modulation

Boss CE-1 Chorus Ensemble

Shared character: vibrato, chorus, modulation

Alexander Pedals Equilibrium DLX Vintage Modulation

Shared character: vibrato, modulation, smooth

Wren and Cuff Sonder

Shared character: chorus, modulation, smooth

Ibanez CS Mini Compressor/Sustainer

Shared character: vibrato, modulation, studio

Keeley Seafoam+

Shared character: vibrato, chorus, modulation

Walrus Audio Monumental Stereo Harmonic Tremolo

Shared character: studio

Catalinbread Callisto Mk. II

Shared character: vibrato, chorus, modulation

Chase Bliss Gravitas

similar tone character