Ressac

A browser that grows with you.

Calm and minimal out of the box. Switch on the AI when you need it to take on the hard stuff.

Closed beta · macOS 14+ · Apple Silicon · open source

Aura
01 · Day one

Just a calm browser.

Firefox under the hood, a quiet sidebar, nothing to sign up for and nothing to switch on. Open it and browse.

Ressac on Wikipedia's Bordeaux page, with the command bar open over it and the tab sidebar on the left.
02 · Your way

Spaces, auras, shortcuts.

Keep work and life in separate spaces, each with its own colour. Jump with ⌃Tab, find anything from the command bar, drive it all from the keyboard — vim keys included.

Ressac's home page with a weather widget on a warm, softly blurred aura.
03 · When you're ready

Switch on the AI.

An agent that browses with you in its own tab, researches, and builds what you need: site apps, extensions, widgets. Use your own Claude or ChatGPT account, or run local models.

Local and open.

No account

Nothing to sign up for. Your browsing stays on your Mac.

Your AI, your choice

The AI is off until you switch it on. Bring your own account or keep everything local with Ollama.

Open source

Built on Firefox, published on GitHub under the MPL 2.0.

What you need.

To browse

A Mac with Apple Silicon, on macOS 14 or later.

For the agent

Docker (OrbStack or Docker Desktop) and a Claude or ChatGPT account, or an API key.

For local AI

Ollama — Ressac can install it for you. More memory means bigger, better models.

Request an invite.

About 20 spots, hand-picked. We'll email you if you're in.

Where are you coming from?

We only use your answers to pick and contact testers. Privacy