Small, focused Chrome extensions for serious software users.
One workflow pain per product. Local-first. No telemetry. Built and supported by the same people who shipped them.
Our tools
Detects PII, credentials, and sensitive data in your prompt before it's sent to any AI chat service. 100% local — your prompts never leave your device. Free for individuals; $5/seat/month for teams.
See Cairn GuardWe have a few extensions in development — a Drive command center, a couple of others. Each is small enough to fully understand and supported by us, not a chatbot. Want to know when the next one ships?
Drop us a lineHow we think about software
Each tool is small enough to fully understand.
No 200-feature kitchen sinks. One workflow pain, well-solved. If you can't explain what an extension does in a sentence, we haven't designed it yet.
Your data stays on your device.
Where the work can be done locally, it is. We don't operate servers that need to read what you're working on. The detection rules in Cairn Guard are open source so your security team can audit them.
We charge fairly.
Free tier for personal use. Real pricing for teams that need rollout, audit, and support. No "contact sales for pricing." No usage-metered surprises.
We answer email.
Support is humans, not a chatbot. You write, a human responds — usually within a business day. If we're slow, we'll tell you why.
About
Cairn IT is a small Washington-State sole proprietorship, started in 2026.
The name cairn is a stack of trail-marker stones — small contributions, one at a time, that help the next traveler find the path. Each tool we ship is one stone on that stack.
For business inquiries, feature requests, or to say hi: hello@cairn.it.com.
Based in the Pacific Northwest. Built for power users of the software they live in every day.