1
Bespoke
bespokesynth.comAlso covers audio editing · same kind of website
Bespoke uses connected modules to create sounds in a modular synthesizer designed for musical exploration and jamming.
Alternatives
The Best Theremin Alternatives in 2026
5 alternatives1 free · 0 open source
Looking for something like Theremin? Here are 5 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan.
This browser-based theremin lets users play a musical synthesizer with a cursor or touchscreen and apply delay, feedback, and other effects.
Top picks at a glance
First suggestionBespokeBespoke uses connected modules to create sounds in a…Free or freemium optioneditor.audioEdit audio in a browser and apply gain adjustment, fade-in…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Bespoke | — | Not stated | Linux, macOS, Web |
| 2 | editor.audio | Free | Not stated | Web |
| 3 | Kilohearts Essentials | — | Not stated | Web |
| 4 | Plugins4Free | — | Not stated | Linux, macOS, Web |
| 5 | Surge XT | — | Not stated | Web |
All Theremin alternatives
2
Also covers audio editing · same kind of website · free
Edit audio in a browser and apply gain adjustment, fade-in, or fade-out effects to sound files.
3
Kilohearts Essentials
kilohearts.com/products/kilohearts_essentialsAlso covers audio editing · same kind of website
Kilohearts Essentials includes 34 products in its free collection, such as compressors, delays, filters, modulation effects, and utilities.
4
Plugins4Free
plugins4free.comAlso covers audio editing · same kind of website
Plugins 4 Free catalogs instrument and effect plugins for audio software, with categories for synthesizers, drums, samplers, and MIDI tools.
5
Surge XT
surge-synthesizer.github.ioAlso covers audio editing · same kind of website
Surge XT combines hybrid synthesis, filters, modulation, effects, microtuning, MPE, and OSC support in an open-source synthesizer.
No alternatives match this filter.
Alternatives to similar tools
TopicAudio Editing & Production · 158 sites Best-of list8 Best Free Audio Editors in 2026 for Voice and Music ListingTheremin details
What is the best alternative to Theremin?
Based on features, tags and platforms, the closest alternatives to Theremin are Bespoke, editor.audio, and Kilohearts Essentials.
Is there a free alternative to Theremin?
Yes. editor.audio is free or offer a free plan.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative