STEM vs VirtualDJ

STEM is a free web platform for bands and music collaborators to upload, mix and discuss song stems. Its multi-track mixer handles uploaded stems, while invited members can view or work on projects in real time. Timed comment threads can be attached to individual tracks or the master track. Share links use customizable permissions, allowing songs to remain private or become public. Users can render stems to MP3, save mix snapshots and export renders. Songs can be grouped into playable, shareable lists for albums, EPs, setlists or work sessions, and can carry lyrics, chord charts, reference tracks, session notes and other files. STEM is intended for discussion and shared decisions rather than music creation like a full DAW. Certain features require a Google account. The privacy policy says uploaded audio is accessible to the user and explicitly shared people. The Free plan costs nothing, with limited version history.

VirtualDJ is DJ software for mixing and performing, for users ranging from beginners to professional DJs. Its live-stems feature separates vocals, instruments, kicks, and hi-hats in real time for mashups, remixes, and transitions. The software mixes audio and video, supports karaoke playback, and includes video effects, transitions, and on-screen graphics. It advertises plug-and-play support for more than 300 controllers and supports DVS equipment. Broadcasting options include Shoutcast and Icecast radio, PC-to-PC broadcasts, podcast streaming, and video broadcasts to social platforms. VirtualDJ also describes streaming support for SoundCloud and Deezer, plus Ableton Link and ReWire integrations. Subscription catalogs cover DJ audio, karaoke, and music videos; cached songs can be played offline while a subscription is active. Dedicated iOS and Android remote apps connect over a local network. The free license is for nonprofessional use without professional equipment. HOME costs $4 per month; VDJ PRO costs $19 per month, and Business costs $99 per month.