Instead of Pymss
Pymss alternatives
Pymss is a free, open-source toolchain for separating vocals, drums, bass, and other stems directly on your machine. Its Studio desktop workspace handles model downloads, storage cleanup, batch queues, waveform previews, mix controls, project saving, and stem export. You can chain models, use the browser interface, connect ComfyUI nodes, or work inside an ARA-capable DAW with per-stem mute and solo controls. Support spans Android, iOS, Linux, macOS, web, Windows, and an API, with outputs including WAV, FLAC, MP3, M4A, AAC, Opus, Vorbis, and Ogg.
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LALAL.AI
Free plan AndroidAPIiPhone+4Broad stem extraction and voice-focused tools — LALAL.AI adds voice tools, video support, many instrument stems, server queues, and optional offline desktop processing.
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Moises
Free plan AndroidExtensioniPhone+3Musicians needing practice and collaboration features — Moises combines separation with chord finding, speed changes, lyric transcription, real-time collaboration, and Fender Studio Pro integration.
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Fadr
Free plan AndroidAPIiPhone+3Free remixing and AI instrument creation — Fadr adds remixing, AI instruments, AI drum kits, unlimited free stems and remixes, plus a VST3/AU plugin.
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MVSEP
Free plan AndroidAPIiPhone+2Large model selection and API operations — MVSEP offers more than 100 models, prepaid credit billing, regional API endpoints, and tools for speech, MIDI, transcription, and upscaling.
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BandLab Splitter
Free plan AndroidiPhoneWebSimple mobile stem editing and BandLab workflows — BandLab Splitter adds BPM, pitch, looping, audio-or-MIDI export, BandLab Studio handoff, and unlimited uploads under 15 minutes.
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Sonura
Free plan MacWebWindowsBrowser and DAW production with six-stem splits — Sonura focuses on an artist-led studio, offers two- or six-stem separation, and provides Flow VST3/AU integrations across numerous DAWs.
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StemRoller
Free plan MacWindowsFree open-source karaoke and vocal tracks — StemRoller is a free open-source desktop app that searches songs online and uses Demucs to create karaoke and stem tracks.
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AI Stem Splitter API
Free plan AndroidAPIiPhone+3 - 9
AI Stem Separation
Free plan Web - 10
AudioStem.ai
Free plan Web - 11
InSplitter
Free plan Web - 12
Spleeter
Free plan APILinuxSelf-hosted - 13
Melos Stem Splitter
Free plan Web - 14
Stemelo
Free plan iPhoneMacWeb - 15
StemSplit
Free plan APIExtensionWeb - 16
MusiCraft Stem Splitter
Free plan Web - 17
StemConsole
Free plan Web - 18
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Ultimate Vocal Remover
Free plan LinuxMacWindows - 20
VocaSplitter
Free plan AndroidiPhoneWeb - 21
Swound
Free plan Web - 22
TuneStems
Free plan Web - 23
VocalRemover.org Splitter
Free plan Web - 24
zplane PEEL STEMS 2
Free trial MacWindows5.5 Visit site
An alternative may fit better if you need hosted processing, additional instrument stems, collaboration, remix tools, voice features, or a different platform mix. Pymss has no free trial, and its Studio is still in early feature development, so breaking changes may occur. Local processing may also conflict with a workflow built around server queues. Compare required stem types, upload and processing behavior, editing and export controls, integrations, platform coverage, and the limits of each free tier before moving away from Pymss.