
The AI coding agent for building ambitious software
The AI coding agent for building ambitious software
massCode records 5,724 monthly visits with -25.5% month-over-month growth and Free pricing. OpenRouter records 19,941,437 monthly visits with -6.2% growth and Paid pricing.

Free, open-source, local-first developer workspace for snippets, notes, APIs and diagrams
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | masscode.io | openrouter.ai |
| Pricing Model | Free | Paid |
| Monthly Visits | 5.72K (5,724) | 19.94M (19,941,437) |
| MoM Traffic Delta | -1.96K (-25.5%) | -1.33M (-6.2%) |
| Primary Market & Share | 🇺🇸 United States (65.4%) | 🇺🇸 United States (16.1%) |
| Direct Visits / mo | 2.22K | 11.96M |
| User Rating | 4.4 | 4.8 |
| Supported Platforms | Website | Website |

Free, open-source, local-first developer workspace for snippets, notes, APIs and diagrams
Organize reusable code fragments in nested folders, tag them for fast filtering, and jump to anything through a keyboard-driven command palette.
Write Markdown notes, explore connections between them in a graph view, and turn notes into tasks with status, priority, due dates and links to related snippets and requests.
Save API requests, run them in sequence, pass values between steps, and inspect responses or JSON diffs without leaving the app.
Connect OpenAI, Anthropic, Gemini, DeepSeek, Mistral, xAI or OpenRouter with your own key, or use a local Ollama/LM Studio model, to edit code, reorganize notes and test APIs. An MCP server exposes the same vault to external AI agents.
One API key for hundreds of AI models from every major provider
Six hundred plus models for text, image, video, audio, transcription, embeddings, and reranking behind one OpenAI-compatible API.
Requests are rerouted to another provider on outages or rate limits by default, so you don't write custom retry logic.
The auto-router selects a model and provider per request using live marketplace performance and pricing data.
Track spend, tokens, and usage per model, provider, and team member in one place, including bring-your-own-key usage.

The AI coding agent for building ambitious software
The AI coding agent for building ambitious software
Google's agent-first development platform for building and shipping software with AI agents
Google's agent-first development platform for building and shipping software with AI agents
Free / Open-sourceRun and build with open AI models locally or in the cloud
Free / Open-sourceRun and build with open AI models locally or in the cloud
Free / Open-sourceA free, open-source personal AI agent that learns your projects and works across every messaging app.
Free / Open-sourceA free, open-source personal AI agent that learns your projects and works across every messaging app.

The coding agent that learns your coding taste
The coding agent that learns your coding taste

Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Free / Open-sourceRun many coding agents in parallel, each in its own worktree
Free / Open-sourceRun many coding agents in parallel, each in its own worktree
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.

AI-generated wikis and chat for any public GitHub repository
SpecialistAn AI IDE and coding agent that works on your project, not just your cursor
SpecialistAn AI IDE and coding agent that works on your project, not just your cursor
SpecialistDelivers exceptional inference speed and high-throughput performance for open models, but focuses primarily on hosted weights rather than multi-provider aggregation.

AI-powered terminal and agentic software factory for development teams