massCode
Free local-first workspace for snippets, notes, API requests and dev tools
Introduction
massCode is a free, open-source developer workspace for code snippets, Markdown notes, HTTP requests, calculations and drawings. Content is stored locally as plain files, and an optional AI assistant can use cloud models with your own API key or local models via Ollama or LM Studio.
- Added on
- Nov 2, 2026
- Website
- masscode.io
- Pricing model
- Free
Product information
What is massCode?
massCode is a cross-platform workspace that keeps snippets, notes, requests and utilities together while storing data as open local files.
How to use massCode?
Download it for macOS, Windows or Linux and work in its Code, Notes, HTTP, Math and Tools spaces. Use the command palette to find items, and optionally connect an AI provider with your own key.
Core features of massCode
- Snippets organized by folders and tags
- Markdown notes with task notes
- Saved HTTP requests and multi-step workflows
- AI assistant with cloud or local models
- Portable local storage
- Command palette navigation
Use cases of massCode
- 1Save and retrieve reusable snippets
- 2Link notes to related snippets and requests
- 3Run API request collections and debug failed checks
- 4Compare JSON responses
- 5Sync the workspace folder with Git or cloud storage
Frequently asked questions about massCode
Is massCode free?+
Yes, it is presented as a free, open-source developer workspace.
Which operating systems does massCode run on?+
macOS, Windows and Linux.
How do I use massCode?+
Download the app, organize work in its spaces, and optionally connect an AI provider with your own API key.
Which category is massCode in?+
massCode is listed under AI Code Assistant.