Is it dangerous?
Keld looks for malware and other active threats hiding behind the page.
keld.
Powerful together.
A safer internet for everyone.
Keld runs quietly on your Mac, checking the unknown sites you reach in disposable sandboxes before you trust them — and one Mac can protect your whole home. It blocks known threats, is honest about what it can't be sure of, and never records who looked up what.
Mac + Windows · free · protects your whole home.
How Keld works
Checked before you trust it.
Keld runs in the background and opens the unknown sites your devices reach in disposable sandboxes, away from your machine, and reads the evidence. The dangerous ones are kept out. The clear ones pass through. The uncertain ones are flagged — honestly.
Blocked and kept out
A request with evidence of harm is deflected before it reaches you.
Allowed through safely
A request with no known concerns continues on to the site.
Keld checks sites before you trust them, blocks the dangerous ones, and flags the ones it can't be sure about.
What Keld asks
Four questions Keld asks of every site
Is it trying to steal from you?
It watches for phishing and scams built to take your money or your credentials.
Is it who it says it is?
New isn't wrong — but identity is checked against the facts, not the branding.
Is it right for this person?
Age and content are weighed against your household's own settings.
Intellectual honesty
Three honest answers
Most tools give you a green tick and hope for the best. Keld tells you what it found — and, just as importantly, what it couldn't.
No known concerns
Checks found no known threat. Not a guarantee of safety.
Blocked
Evidence of a dangerous site — or your household's own policy.
Unknown
Not enough evidence yet. Keld tells you exactly what it couldn't check.
Keld at home
One Mac can look after the whole house.
Keld runs quietly in the background. Every Mac it's on protects itself — and any one of them can answer for the devices that can't run it, so the whole home is covered.
Always on
Turn it on once. Keld then checks every site that Mac reaches — not just the ones you look up by hand — and stays out of the way the rest of the time.
Protects the whole house
Point your router at one Keld Mac and the devices that can't run it — phones, tablets, the TV, the console — are protected too. Every Mac carries its own weight.
A setting for everyone
Put each device on kid, teen or adult. Adults can still choose to keep porn and gambling out. Nothing is guessed — you decide, per person.
See it working
A live dashboard shows each site being checked right now, how quickly, and how many safety choices Keld has helped your household make.
The Keld network
Powerful together.
Your checks protect you — and, if you choose to share, the signed, privacy-scrubbed findings help protect everyone else. Keld never records who looked up what.
- You choose what, if anything, is shared.
- Findings are signed and privacy-scrubbed before they travel.
- No personal browsing history leaves your device.
Get Keld
Bring Keld home.
Keld installs on the Macs your household already uses, and one of them can look after everything else. Downloads open soon — the builds are on the way.
Download for macOS
Coming soon
Download for Windows
Coming soon
Free to start. Mac and Windows first; the Keld Home appliance is planned.
For business
Keld, inside your own walls.
Run Keld as a private, self-contained cluster inside your organisation — your own checking capacity, your own policy and logging, nothing published outside.