OpenMat
OpenMat is an independently developed numerical programming environment with a MATLAB-like language, a browser IDE, and a Windows desktop application. Its compatibility target is the MATLAB R2022b base language; compatibility is incomplete and is defined by the checked-in specifications and tests.
The Rust server runs the compiler, bytecode interpreter, and numerical kernel. The React client provides editing, language services, workspace inspection, figures, a drag-and-drop App Designer backed by M-language classes, and a block diagram model editor. Rust compiled to WebAssembly handles plot rendering; the language VM runs natively. The desktop application embeds this frontend using Tauri.
The Windows installer includes calculation and plotting examples. A new desktop session opens Documents/OpenMat/Examples/<version>: open START_HERE.m and click Run . The example catalog covers FFT, least-squares fitting, mathematical patterns and 3D surfaces.
Start developing
The first supported host is Windows x64. Install PowerShell 7, Visual Studio Build Tools with the C++ workload and Windows SDK, CMake, Rust/rustup, Node.js 22.19.0, and pnpm 10.30.3. The repository pins Rust 1.90.0.
From the repository root:
rustup target add wasm32-unknown-unknown
cargo install wasm-bindgen-cli --version 0.2.127 --locked
pnpm --dir apps/web install --frozen-lockfile
pwsh -NoProfile -File tools/openmat-dev/Invoke-OpenMatDev.ps1The launcher starts the native server and web client. MATLAB is not required to build or run OpenMat. See the development guide for workspace selection, smoke tests, and build options, and desktop build instructions for the Windows installer.
Repository
crates/: compiler, runtime, numerical providers, server, LSP, and plotting.apps/web/: React IDE, App Designer, and simulation model editor.apps/desktop/: Tauri desktop shell.simulation/: numerical block models, reference/LLVM execution, SLX import and CLI.sdk/,include/,plugins/,toolboxes/: extension interfaces and examples.spec/anddocs/rfcs/: language and protocol contracts.tests/conformance/: OpenMat-authored tests and normalized reference data.tools/: development, compatibility, and release tooling.
Some design documents describe earlier development milestones rather than current completeness. Tests and accepted contracts are the source of truth.
Checks and contributions
node tools/release/check-public-source.mjs
cargo fmt --all --check
cargo clippy --locked --workspace --all-targets --all-features -- -D warnings -D clippy::pedantic
cargo test --locked --workspace
pnpm --dir apps/web typecheck
pnpm --dir apps/web test
pnpm --dir apps/web buildSee CONTRIBUTING.md for development and source-provenance rules. The conformance harness compares OpenMat results with project-owned manifests and normalized black-box observations. The optional MATLAB oracle requires a separately licensed R2022b installation; public CI does not invoke MATLAB.
License and dependencies
OpenMat's first-party code, documentation, and project-authored tests are licensed under GNU Affero General Public License version 3 only (AGPL-3.0-only), unless a file explicitly states otherwise. See LICENSE. Contributors retain their respective copyrights.
This Git repository does not vendor third-party library source or binaries. Cargo, pnpm, and the release scripts obtain dependencies during builds using lockfiles and pinned checksums. Third-party components retain their own licenses; their license texts and attribution are not relicensed as OpenMat. See dependency and release policy.
OpenMat is an independent project and is not affiliated with or endorsed by MathWorks. MATLAB is a trademark of The MathWorks, Inc.