01
Dexed
by Digital Suburban · DX7 FM synth (open source)
DX7 emulation that loads original DX7 patches. 6 operators, no FM8 effects or morphing.
VST3AUCLAPStandalonemacOSWindowsLinux
Native Instruments FM8 · Native InstrumentsFree alternatives to Native Instruments FM8
Powerful FM synth with a big preset library. Here are 2 genuinely free options, ranked by how close they get.
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02
Surge XT
by Surge Synth Team · Hybrid synth (open source)
Has FM oscillators within a broader synth. Not a dedicated FM matrix.
VST3AUCLAPLV2StandalonemacOSWindowsLinux
Free means free: no trials, no time limits, no demos. Some need a free account; we flag those. Spot something wrong or a better swap? Tell us.
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