MatFree

Free, open-source scientific computing — in your browser.

matfree.app

MatFree is a free, open-source computing environment for numerical analysis, matrix operations, and scientific computing. It runs entirely in the browser with no installation, no license fees, and no restrictions.

Features

• Matrix Engine — Dense matrices, linear algebra (det, inv, eigenvalues), broadcasting
• Rich Language — Functions, anonymous functions, closures, structs, cell arrays, control flow
• Interactive REPL — Command window with history, instant feedback
• 200+ Built-in Functions — Math, statistics, signal processing, symbolic math, ODEs, and more
• Script Editor — Write and run multi-line scripts in the browser
• Notebook — Code and markdown cells with save/load to IndexedDB
• Data I/O — readcsv, writematrix, writecsv, jsondecode, jsonencode; Load URL for CSV
• Open Source — MIT licensed, community-driven

Try It

Visit matfree.app and start computing. No sign-up required.

Quick Examples

% Matrix operations
A = [1 2; 3 4];
B = inv(A);
disp(A * B)

% Functions
function y = fib(n)
  if n <= 1
    y = n;
  else
    y = fib(n-1) + fib(n-2);
  end
end
fib(20)

% Statistics
data = [4 8 15 16 23 42];
fprintf('Mean: %f\n', mean(data))
fprintf('Std: %f\n', std(data))

% Data I/O: parse CSV, export, JSON
data = readcsv('1,2,3\n4,5,6');
writematrix(data, 'output.csv')
s = jsondecode('{"x":1,"y":2}');

Development

# Install dependencies
npm install

# Run development server
npm run dev

# Build for production
npm run build

Native Engine

The engine/ directory contains a C++ implementation of the MatFree engine for native performance. See engine/CMakeLists.txt for build instructions.

Architecture

• src/engine/ — TypeScript engine (lexer, parser, interpreter) that runs in the browser
• src/app/ — Next.js web application (landing page, playground, notebook)
• engine/ — C++ native engine (for CLI and native bindings)

License

MIT License. See LICENSE for details.