massCode

massCode is a free, open source developer workspace for saving code snippets, Markdown notes, HTTP requests, diagrams and calculations. Your data is stored locally, so the app works offline.

Snippets are organized in folders and tags, and a command palette helps you find any snippet, note or request quickly. Notes can link to snippets and API requests, so the next step is close at hand. Tasks can have a status, a priority and a due date. The HTTP client runs saved requests in sequence, passes values between steps and shows the results of tests.

• Organize snippets in folders with tags
• Link notes to snippets and API requests
• Track tasks with status and due dates
• Run API workflows in sequence
• Command palette for quick search

Developers who collect reusable code and API calls, and people who want their notes and snippets kept on their own computer rather than in a cloud service.

The app is free and licensed under AGPL-3.0. It is local-first and works offline. Because of the AGPL licence, check its terms before you use a modified version as part of a hosted service. The app is available for macOS, Windows and Linux, and it can be installed through Homebrew on macOS.