Helm

Helm is a capable subtractive synthesizer that works on all major operating systems. You can use Helm as a standalone app or a synth plugin in Windows, macOS, and Linux. The interface keeps all controls on a single UI panel without menus, which speeds up the programming workflow. Despite its extensive feature set, Helm never feels cluttered. It offers everything you’d expect from a subtractive synth, with a few extras you won’t find in most other freeware synths.

One is the stutter effect, perfect for creating glitchy, pulsing sounds. Another is the built-in arpeggiator module, which works with Helm’s step sequencer. Helm is from the same developer as Vital, and it’s a solid option if you want something lighter and more focused than its wavetable sibling.