Open-source alternatives to Serum

A hybrid synthesizer that mixes wavetable, FM, subtractive and modular-style routing, with a deep effects section and thousands of patches. One of the most complete free synths around.

Formats

• VST3
• CLAP
• AU
• LV2
• Standalone

Works on

• Windows
• macOS
• Linux

Stars4.1k

UpdatedNov 2, 2026

Instead ofSerumMassive

A spectral-warping wavetable synthesizer with a clear, drag-and-drop interface, in the same league as Serum for modern wavetable sounds.

Formats

• VST3
• AU
• LV2
• Standalone

Works on

• Windows
• macOS
• Linux

Stars2.2k

UpdatedApr 20, 2022

Instead ofSerum