Free, open-source hybrid synthesizer with extensive filters and a flexible modulation engine.
VST3supportedAUsupportedAAXnot supportedCLAPsupportedWINsupportedMACsupportedLNXsupported
Checked September 2026
Surge XT vs Dexed (2026)
Surge XT is best for budget-conscious producers wanting a fully free, open-source synth with pro-level features; Dexed is best for musicians wanting free, accurate DX7-style FM synthesis and cartridge management. Surge XT starts at Free and Dexed at Free.
Digital Suburban
Dexed
Free, open-source FM synthesizer plugin modeled closely on the Yamaha DX7.
VST3not supportedAUsupportedAAXnot supportedCLAPnot supportedWINsupportedMACsupportedLNXsupported
| Surge XT | Dexed | |
|---|---|---|
| Best for | budget-conscious producers wanting a fully free, open-source synth with pro-level features | musicians wanting free, accurate DX7-style FM synthesis and cartridge management |
| Starting price | Free | Free |
| Free version | Yes | Yes |
| Free trial | — | — |
| Formats | VST3, AU, CLAP, LV2, Standalone | VST, AU, LV2, Standalone |
| OS | Windows, macOS, Linux | Windows, macOS, Linux |
| Key features | Hybrid synthesis engine, Extensive filter selection, Flexible modulation matrix, MPE and microtuning support, Open Sound Control support | FM synthesis modeled on the Yamaha DX7, DX7 MIDI cartridge librarian/manager, Multi-platform, multi-format plugin, GPLv3 open-source |
| Developer | Surge Synth Team | Digital Suburban |
Questions people ask
Surge XT starts at Free; Dexed starts at Free.
Hybrid synthesis engine, Extensive filter selection, Flexible modulation matrix, MPE and microtuning support, Open Sound Control support.
FM synthesis modeled on the Yamaha DX7, DX7 MIDI cartridge librarian/manager, Multi-platform, multi-format plugin, GPLv3 open-source.