Stop losing snippets in endless tabs, notes, and email threads

Every developer has a stash of reusable code—SQL queries, regexes, UI components, API payloads—that lives scattered across IDEs, browser tabs, and sticky notes. The lack of a central, searchable, and secure repository forces you to waste time hunting for that one line of code you swore you saved yesterday. massCode solves this exact problem by providing a free, offline‑first, cross‑platform snippet library that lives on your machine, respects your privacy, and never asks you to upgrade to a paid tier.

Briefly, massCode offers a polished desktop experience (Windows, macOS, Linux) powered by Electron, Vue 3, and the battle‑tested CodeMirror editor. It mimics the workflow of commercial tools like SnippetsLab or Quiver while staying completely open source, extensible, and cost‑free.

Why Choose massCode?

• Zero cost, zero lock‑in – No subscription fees, no hidden cloud plans. Your snippets stay on your device, and you can fork or self‑host the code whenever you like.
• Rich multi‑level organization – Nest snippets in folders, tag them, and split a single snippet into multiple fragments (tabs) for granular control.
• Powerful editor out of the box – Built on CodeMirror with over 600 language grammars (160+ bundled). Integrated Prettier keeps formatting consistent, and live HTML/CSS preview lets you prototype instantly.
• Beyond code: Markdown, mind‑maps & visualizers – Full Markdown support with tables, lists, Mermaid diagrams, and a presentation mode. Generate mind maps from Markdown, explore JSON data with an interactive graph view, and export beautiful screenshots.
• Developer utilities on demand – Handy tools like case converters, slug generators, URL parsers, hash/HMAC generators, and password generators are baked in, saving you from context‑switching to separate apps.
• Community‑driven & extensible – Extensions for VS Code and Raycast already exist; the plugin architecture lets you add your own workflow tweaks without touching the core code.

Spotlight on Key Features

Getting Started

1. Download the pre‑built binary (recommended)

1. Visit the Download page on the official site.
2. Choose the installer for your OS (Windows .exe, macOS .dmg, Linux .AppImage).
3. Run the installer and launch massCode from your applications menu.

2. Run from source (for contributors)

# Clone the repository
git clone https://github.com/massCodeIO/massCode.git
cd massCode

# Install dependencies
pnpm install

# Start the build
pnpm build

3. Import / Export

• Import existing JSON or plain‑text snippet collections via File → Import.
• Export your entire library as a single JSON file for version control or migration.

How massCode Stacks Up Against Proprietary Alternatives

massCode delivers most of the premium features of SnippetsLab and Quiver while remaining completely free, cross‑platform, and privacy‑first.

Call to Action

If you’ve been juggling snippets across disparate tools, it’s time to bring everything under one roof—without paying a cent or surrendering your data.

• Explore the live demo on the website to see the UI in action.
• Download massCode today and start building your personal knowledge base.
• Star the repository on GitHub to help the project gain visibility and attract contributors.
• Support development via the “Donate” button on the site if you find the tool valuable.

Try massCode now → https://masscode.io
Star the project on GitHub → https://github.com/massCodeIO/massCode