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Knit vs Briar
Two free, open-source ways to message without servers — built on different ideas about who you're talking to.
Last reviewed: August 2026
Knit and Briar both message without servers, and both keep working when the internet doesn't, which is why they end up in the same searches. They're built for different situations, and the split is clean: Briar keeps you in touch with people you already know, wherever they are. Knit connects you with everyone around you, the moment it's installed.
The short version: Knit is built for the crowd around you — and its optional Internet relays now keep those conversations going after everyone scatters. Briar is still the pick for relationships that live mostly online: it can add a contact at a distance, and Tor hides who talks to whom, which Knit's relays don't attempt.
| Feature | Knit | Briar |
|---|---|---|
| Works with no internet | Yes | Yes |
| Multi-hop mesh — messages relay phone to phone beyond your own radio | Yes | No |
| Store & forward through other phones | Yes | No |
| Open Nearby room — talk to people you haven't met1 | Yes | No |
| No account, no password | Yes | No |
| End-to-end encrypted direct & group chats | Yes | Yes |
| Forward secrecy2 | Yes | Yes |
| Photos, GIFs, voice notes & reactions | Yes | Images only |
| On-device AI moderation | Yes | No |
| Works over the internet3 | Yes, via optional relays | Yes, via Tor |
| Desktop app | No | Yes |
| Free, no ads, open source (GPLv3) | Yes | Yes |
- 1The Nearby room is an open broadcast, plaintext by design — like talking out loud in a crowd. Direct and group chats are the sealed part.
- 2Knit rotates keys per block of messages, not per message, and a chat with someone on an older Knit build falls back to the previous static-key scheme, which has none. Spent keys are deleted, so mesh traffic recorded today can't be decrypted later.
- 3Knit's Internet relays are opt-in and carry only conversations you already started nearby, as sealed frames the relay can't read — no accounts, no discovery, and you can run your own. They don't hide who talks to whom; Briar's Tor does. The Nearby room stays radio-only.
Where Knit wins: the crowd in front of you
Knit's bet is the mesh. Every phone running it relays sealed messages for every other, so a message hops device to device until it finds the person it's for — across a festival crowd, a blacked-out block, a stadium where the network has buckled. If there's no path yet, the message waits and rides the next phone that walks by. Your reach is the crowd's reach, not your own radio's.
It also starts from zero. No account, no password, no vetting ceremony: install Knit and the people around you appear, in a Signal-style app your friends already know how to use — reactions, replies, @-mentions, voice notes, photos and GIFs. The open Nearby room lets a whole campsite or venue talk without anyone exchanging contacts first, and an on-device AI filter keeps it civil, screening abusive text and blurring explicit images without an upload anywhere.
Those two things — reach beyond your radio and zero setup — are the whole case. A festival where the towers buckle, a march, a power cut, a cruise ship, a trail: anywhere the people who matter are physically near you and the internet isn't, Knit is the tool built for it. And the conversation now survives the drive home: flip on Knit's Internet relays and an existing DM or group keeps flowing when nobody is in radio range — no account, and nothing a relay can read.
Where Briar wins: the people you already trust
Briar is the better pick when a relationship lives mostly online. It can add a contact at a distance — a link, a mutual friend — where a Knit conversation has to begin in person, over the radio or a QR code. And it syncs over Tor, which hides even the fact that two people are talking; Knit's relays don't attempt that, moving sealed frames over the plain internet instead. It also has a desktop app, and over a decade of scrutiny behind it, including an independent audit. For a known, vetted group coordinating across distance under a hard threat model, Briar is home ground, and this page won't talk you out of it.
The cost is ceremony. Every contact is added deliberately, behind an account and a password, and offline it reaches exactly as far as your own radio: there's no relaying through strangers, so nothing crosses a crowd.
Security, side by side
Both apps are open source under the GPLv3 and end-to-end encrypt private conversations — in Knit that's direct and group chats, sealed down to the mentions and image attachments and verifiable in person with a safety number or QR code. The deliberate exception is Knit's public Nearby room: an open broadcast, like talking out loud in a crowd, and Knit never pretends otherwise.
Each rotates keys so traffic recorded today can't be decrypted later — in Knit per block of messages rather than per message, and a chat with someone on an older Knit build falls back to the old static-key scheme until they update. Knit's messages are also encrypted at rest under a hardware-backed key that never leaves the phone and stays out of cloud backups, so reading them takes unlocking the device, not stealing it.
On metadata, score it by where you are. Over the internet Briar's Tor hides who talks to whom; Knit's optional relays don't try — a relay holds sealed frames it can't read, but it can see traffic arrive and from where. Over the radio both are visible to anyone nearby, but the patterns differ: an observed Briar link points at a specific pair who know each other, while a Knit phone spends most of its airtime relaying other people's sealed messages — seeing it transmit tells you it's part of the mesh, not that its owner said anything.
The browser demo shows the hop-by-hop idea without installing anything: knock out a cell tower, then walk a message across a crowd.
Choose Briar if…
- You want to add people at a distance — Briar can start a contact over a link; Knit has to meet them first.
- Metadata matters as much as content — Tor hiding who talks to whom is the feature.
- You want vetted contacts only, with a desktop app alongside.
Choose Knit if…
- The people you need to reach are around you — and not all of them are in your contacts.
- You need messages to cross a crowd, hopping phone to phone past your own radio range.
- It has to work for everyone instantly: no account, no password, no adding contacts first.
- You want a familiar chat app — reactions, GIFs, groups — that happens to need no network.
Common questions
Can Knit and Briar talk to each other?
No. They speak different protocols, so a Knit phone and a Briar phone can't exchange messages — each app only meshes, or syncs, with itself. That's true across this whole category of apps, not a quirk of these two.
Which one is more private?
It depends on what you're protecting. Over the internet Briar has the stronger story: its traffic rides Tor, which hides who talks to whom, while Knit's optional relays move sealed frames a relay can't read but make no attempt to hide the traffic itself. Over the radio both are visible to anyone nearby, Briar as a direct link between two contacts' devices, Knit as mesh chatter in which a relaying phone and a talking one look the same from outside. Private conversations are end-to-end encrypted in both; for Knit that means direct and group chats, while the public Nearby room is an open broadcast anyone in range can read. And both rotate keys so recorded traffic can't be decrypted later, though Knit rotates per block of messages, and a chat with someone on an older Knit build falls back to a static-key scheme without that protection.
Can I run both?
Yes. Nothing stops you keeping Briar for a trusted circle and Knit for whoever's nearby — the two cover different ground, and they don't interfere with each other.
Does Briar mesh through strangers like Knit does?
No, and on purpose. Briar moves data only between devices that have added each other, so offline it reaches one radio hop to a contact. Knit's whole bet is the opposite: strangers' phones relay your sealed messages onward, which is what lets one cross a crowd.
Which one should I bring to a festival or a march?
For a small group that can meet beforehand and add each other, Briar's vetted contacts work well — and it keeps working afterwards over the internet. For finding people in a big crowd, reaching beyond your own range, or talking to whoever's around, the mesh is the point of Knit — and with its Internet relays on, the group thread you started in the field keeps going afterwards. There's no rule against carrying both.
We checked the Briar facts on this page against the Briar Project's own documentation; the date above says when. Briar is an independent project, not affiliated with Knit, and briarproject.org has the latest on their side. Spotted something wrong or out of date? Tell us and we’ll fix it.
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