Credit where due
Open-source licenses
OpenVTL™ stands on free software, and the parts deserve naming. The tables list the major components in a running appliance and the licenses they carry. Each component's full license text travels with its source.
OpenVTL itself
OpenVTL's original code (the daemon, web UI, packaging, and documentation) is licensed under AGPL-3.0 with an additional trademark term under AGPL §7(e); the mhVTL patch set is GPL-2.0. "OpenVTL" and the OpenVTL logo are trademarks of Emerald Coast Technologies LLC, registration pending (TRADEMARK.md). Outside contributions require the CLA; attribution notices are in NOTICE.
trademark questions · legal@openvtl.com · security reports · security@openvtl.com
Appliance platform
| Component | Role | License |
|---|---|---|
| Debian GNU/Linux 13 | operating system | DFSG-free (various) |
| Linux kernel · LIO SCSI target | kernel, FC target | GPL-2.0 |
| mhVTL | tape library emulation | GPL-2.0 |
| OpenZFS | storage: compression + deduplication | CDDL-1.0 |
| targetcli-fb / rtslib-fb | target configuration | Apache-2.0 |
| mtx | media changer control | GPL-2.0 |
Control plane (openvtld)
| Component | Role | License |
|---|---|---|
| Go standard library + toolchain | daemon language and runtime | BSD-3-Clause |
| minio-go | S3 export and import | Apache-2.0 |
| klauspost/compress | zstd chunk compression | Apache-2.0 and BSD-3-Clause |
| modernc.org/sqlite | embedded database driver | BSD-3-Clause |
| SQLite | database engine | Public domain |
| golang.org/x/crypto · x/sys | Ed25519 verification, system calls | BSD-3-Clause |
Web UI
| Component | Role | License |
|---|---|---|
| React | interface framework | MIT |
| Vite | build tooling | MIT |
| Tailwind CSS | styling | MIT |
| TypeScript | language | Apache-2.0 |
This website
| Component | Role | License |
|---|---|---|
| Astro | static site generator | MIT |
| Figtree · IBM Plex Mono | typefaces | OFL-1.1 |
The lists cover the major components; a release bundle vendors its sources, and the Debian packages on the appliance carry their own copyright files under /usr/share/doc.