Credits

KOSMOVIZ stands on 30 directly-credited pieces of open-source software, public datasets, and third-party services. Each section below lists authors + licenses. Transitive deps (libraries-of-libraries) are audited automatically by scripts/legal-audit.ts — the full machine- readable tree ships alongside every build.

Dataset provenance manifests (SHA-256 per training track) live at /legal/provenance. License audits for each build are posted to /legal/license-audit.

Core runtime

Frameworks + libraries that run in the app.

Next.jsMIT
App framework · Vercel
ReactMIT
UI framework · Meta Platforms
Tailwind CSSMIT
Styling
Drizzle ORMApache-2.0
Type-safe SQL
ZodMIT
Schema validation
Auth.jsISC
Authentication
BullMQMIT
Job queue
ioredisMIT
Redis client
postgres-jsUnlicense
Postgres driver
BiomeMIT
Linter + formatter
VitestMIT
Test runner

Visual + audio engine

Shader / visualizer / encoding dependencies.

MediabunnyMIT
WebCodecs MP4 muxer
gifshotMIT
Client-side GIF encoder · Yahoo
hear21passtApache-2.0
Patchout faSt Spectrogram Transformer (audio embeddings) · Khaled Koutini et al.

Stem separation — Banquet architecture

Model architecture + pretraining corpus. Weights shipped by KosmoViz are self-trained on CC/permissively-licensed data (see Privacy Policy §4) — we do NOT redistribute MoisesDB-trained checkpoints.

Banquet / query-banditMIT
Stem-agnostic single-decoder source-separation architecture · Karn N. Watcharasupat & Alexander Lerch
ZFTurbo / Music-Source-Separation-TrainingMIT
Training-framework fork used for Banquet fine-tune

Datasets

Training + evaluation data. Provenance manifests (SHA-256 per track) live in /legal/provenance.

FMA (Free Music Archive)CC-BY-4.0
Training mixtures (CC-clean subset filtered to CC-BY / CC-BY-SA / CC0) · Defferrard, Benzi, Vandergheynst, Bresson
Slakh2100CC-BY-4.0
MIDI-aligned training + test split · Manilow, Wichern, Seetharaman, Le Roux
FSD50KCC-BY-4.0
Sound-effects augmentation layer · Fonseca, Favory, Pons, Font, Serra

Shader library

All shader entries carry an SPDX license header (MIT, CC0-1.0, or Apache-2.0). Original authors are credited in each shader file.

Íñigo Quílez — FBM clouds, distance-field primitivesMIT
ShaderToy originals adapted for WebGL1

Third-party APIs

External services. Usage governed by each provider's ToS — not redistribution.

PaddleProprietary
Merchant-of-Record payments + tax
ResendProprietary
Transactional email
PostHogProprietary
Product analytics (self-hosted)
Pexels Video APIPexels License
Smart-Cut stock-clip library
Pixabay Video APIPixabay License
Smart-Cut stock-clip library
Genius APIProprietary
Lyric fetch (Stage-3 feature)
Runway Gen3Proprietary
AI-scene generation provider (Stage-4)
KlingProprietary
AI-scene generation provider (Stage-4)

Fonts

Self-hosted under their respective open-source licenses; see /api/static/fonts for the served subset.

InterOFL-1.1
Default UI + lyric font · Rasmus Andersson
JetBrains MonoOFL-1.1
Monospace (code blocks)

Missing an attribution? Something wrong? Open an issue at legal@kosmoviz.io.