The lightweight, local-first
A Fast, offline-ready IDE with BYOK or local AI integration built for the modern developer.
Built Different
Everything you need for speed and focus.
100% Local-First Architecture
Your files, notes, and code never leave your device. Pencyl reads directly from your local filesystem with zero mandatory cloud sync or external dependencies.
Instant Launch
Sub-second startup times designed to get you straight into your flow state without waiting.
Keyboard Driven
Full command palette integration to control actions without ever taking your hands off the keyboard.
Zero Telemetry
No tracking scripts, analytics, or silent data collection. What you write stays on your machine.
Extensible AI Support
Connect custom local models via Ollama or bring your own API keys for intelligent contextual assistance.
Compare and edit side-by-side.
Work across multiple documents effortlessly. Keep your reference notes on one side and your code on the other with seamless pane management.
- Split windows vertically or horizontally
- Independent scroll and focus state per pane
Execute without context switching.
Run local scripts, inspect build processes, and interact directly with your workspace shell without ever leaving the application.
- Integrated CLI execution and task management
- Low-latency local terminal rendering
Tailored theme engine.
Choose the aesthetic that fits your environment. Switch seamlessly between dark obsidian tones and high-clarity light modes with a single click.
- Multiple built-in dark & light themes
- Eye-strain reducing color contrast profiles
Got Questions?
Frequently Asked Questions
Is Pencyl completely free and open source?
Yes! Pencyl is licensed under Apache-2.0. You can inspect the source code, build it from scratch, or contribute on GitHub.
Where is my data stored?
Everything is stored 100% locally on your machine's file system. We do not operate remote servers or store your files in the cloud.
Which operating systems are supported?
Pencyl runs natively on Windows, macOS (Intel & Apple Silicon), and Linux distributions.
Can I use local LLMs with Pencyl?
Absolutely. You can connect local inference engines like Ollama directly via local endpoints.
What AI models are supported?
Pencyl supports open-weights models running locally via Ollama (such as Llama 3, DeepSeek, Qwen), as well as cloud providers like OpenAI (GPT-4o), Anthropic (Claude 3.5), and Groq using your own API keys.
Where do I report bugs and request features?
You can report bugs, request features, or share feedback directly on our GitHub Issues page or participate in our repository discussions.
Ready to elevate your local workspace?
Download Pencyl for your operating system and take full control of your files.