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sidebar_label: License
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# License

## DCR

DCR itself is [GPL-3.0-or-later](https://spdx.org/licenses/GPL-3.0-or-later.html) licensed.

> **Note:** DCR is a build tool, not a library. The GPL applies only to DCR's own source code. Projects built with DCR are not subject to DCR's license — their licensing is determined solely by their own code and dependencies.

## Vendored libraries

DCR statically links the following C libraries through its vendored Rust dependencies:

| Library | License | Bundled by |
|---|---|---|
| [libgit2](https://libgit2.org) | MIT OR Apache-2.0 | `git2` / `libgit2-sys` |
| [libssh2](https://libssh2.org) | MIT OR Apache-2.0 | `libgit2-sys` |
| [zlib](https://zlib.net) | MIT OR Apache-2.0 | `libgit2-sys` |
| [OpenSSL](https://openssl.org) | Apache-2.0 | `openssl-sys` / `openssl-src` |
| [ring](https://github.com/briansmith/ring) | Apache-2.0 AND ISC | `rustls` |

## Rust dependencies

DCR is written in Rust. The following notable Rust crates are statically linked:

| Crate | License |
|---|---|
| [`reqwest`](https://crates.io/crates/reqwest) | MIT OR Apache-2.0 |
| [`rustls`](https://crates.io/crates/rustls) | Apache-2.0 OR ISC OR MIT |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`git2`](https://crates.io/crates/git2) | MIT OR Apache-2.0 |
| [`openssl`](https://crates.io/crates/openssl) | Apache-2.0 |
| [`tokio`](https://crates.io/crates/tokio) | MIT |
| [`hyper`](https://crates.io/crates/hyper) | MIT |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |

Full dependency tree (143 packages) is available in [`Cargo.lock`](https://github.com/dexoron/dcr/blob/main/Cargo.lock). The overwhelming majority are dual-licensed under MIT OR Apache-2.0.

## Additional credits

- DCR's CLI design and project model are inspired by [Cargo](https://doc.rust-lang.org/cargo/).
