massCode
Free, open-source developer workspace for code snippets, markdown notes, calculations, drawings, and built-in dev tools. Works offline and stores data locally.
massCode launched on January 20, 2020 with 128 votes, #212 of 3,486 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
MassCode is an open source code snippets manager designed for developers. It organizes and stores reusable code snippets for quick reference and retrieval during development work. The tool launched in August 2022 and is available at masscode.io. Developers can use it to build and maintain a personal library of code fragments, making it easier to find and reuse solutions across projects.
written from the facts on this page · September 2026
From the sources
A code snippets manager developed with web technologies. It helps you create and organize your own personal snippets collection and have quick access to it.
Manage code snippets, write markdown notes, send HTTP requests, solve calculations, sketch diagrams, and use built-in developer tools. Free, open source, and worksfrom masscode.io
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