massCode

massCode is an open-source desktop workspace for developers on macOS, Windows, and Linux. It brings together code snippets, technical notes, a full-featured HTTP client, and a collection of developer tools. A built-in AI assistant works across the workspace using your own AI provider or a locally running model, while MCP lets coding agents work with your saved code, notes, and HTTP requests.

All content is stored locally as plain Markdown files, with no account and no proprietary cloud. Users keep full ownership of their data and can sync it with iCloud Drive, Dropbox, Google Drive, Syncthing, or Git.

massCode has 7k GitHub stars and 494k cumulative release downloads, with 25 releases in the last 12 months.