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Mesh

Team chat with channels, DMs, voice and video calls, and file sharing, on web, mobile and desktop. The server orders every message, so every client sees the same conversation.

Generally availableGo · Next.js · WebSocket · PostgreSQL · Redis

Open MeshSee the architecture

The problem

Collaboration tools buckle exactly when the team scales.

Most chat platforms are prototypes that got popular. They hold up in a ten-person workspace and fall apart at a thousand: messages arrive out of order, uploads time out, and every new client drifts a little further from the truth.

  • Message ordering that quietly breaks under concurrent writes.
  • File uploads that fail at exactly the size teams actually share.
  • Reconnects that lose whatever arrived while you were offline.
  • A UI that feels like a compromise on at least one of your devices.

The solution

A collaboration core engineered like infrastructure.

Mesh numbers every message on the server, in the same transaction that stores it, before it fans out to anyone. Ordering is a property of the system rather than a hope, and it holds on web, mobile, and desktop alike.

  • Server-assigned sequence numbers give every conversation one order.
  • Idempotent sends mean no duplicates, even through a flaky connection.
  • Reconnect and Mesh backfills exactly what you missed, nothing more.
  • Voice and video calls with screen sharing, one tap from any channel.
Features

What Mesh does.

Realtime messaging & presence

Persistent WebSocket fan-out with server-assigned ordering. Messages land once, in sequence, on every client, with live presence and typing.

Voice & video calls

Jump from any channel into a voice or video call in one tap, with screen sharing built in.

Share files

Drag in files, images, and clips up to 25 MB. Uploads go straight to object storage on a presigned URL, never through the chat server.

Channels, groups & DMs

Public channels for the whole team, private groups for projects, and one-to-one DMs, organised per workspace.

Reconnect backfill

Drop offline and Mesh replays exactly what you missed, in order, from the last message you saw.

Gap-free & reliable

Per-conversation sequence numbers and idempotent sends: a gap is detectable, and a retried send never posts twice.

Architecture

How it's put together.

Every layer exists because a guarantee demanded it.

  1. 01

    Clients

    Next.js on the web, React Native (Expo) on iOS and Android, Tauri on the desktop.

    Next.js · React Native · Tauri

  2. 02

    Realtime

    Go services hold the WebSocket connections. A Redis pub/sub backplane carries every broadcast to every instance, and each fans it out to its own connections, so any instance can serve any user.

    Go · WebSocket · Redis

  3. 03

    Ordering

    A send locks its conversation, takes the next sequence number and stores the message in one Postgres transaction. A retry with the same client message ID gets the stored message back instead of a duplicate.

    Go · PostgreSQL

  4. 04

    Files

    Clients upload straight to object storage on a presigned URL: Google Cloud Storage in production, MinIO locally.

    Cloud Storage · MinIO

  5. 05

    Calls

    WebRTC. One-to-one calls go peer to peer through STUN and TURN; group calls run through a LiveKit SFU.

    WebRTC · LiveKit

See it live

Mesh is running today.

Open the real product and try it yourself, at mesh.synopshq.com.

Open Mesh
Pricing

Priced to be predictable.

Start free and upgrade as the team grows. Nothing here is a surprise later.

Free

$0forever

For small teams getting started.

  • Up to 10 members
  • Unlimited channels & DMs
  • 1:1 voice & video calls
  • Web, mobile & desktop apps
Get started

Team

Most popular
$6per user / month

For growing teams that live in chat.

  • Unlimited members & history
  • Group video calls & screen share
  • File sharing up to 25 MB
  • Multiple workspaces
  • Priority support
Get started

Enterprise

Customannual

For organisations with scale, security & compliance needs.

  • SSO & SAML
  • Audit logs & data residency
  • Dedicated infrastructure
  • 99.9% uptime SLA
  • 24/7 priority support
Talk to us
FAQ

Questions, answered directly.

How does Mesh guarantee message order?

Every channel has a monotonic, server-assigned sequence number, and sends are idempotent. Messages land once and in order on every client, and a reconnect backfills exactly what you missed, so no duplicates and nothing lost.

What platforms does Mesh run on?

A fast web app in any modern browser, native mobile apps for iOS and Android, and native desktop apps for macOS, Windows, and Linux, all from one elegant, in-sync experience.

Does Mesh have calls and file sharing?

Yes. Jump from any channel into voice or video with screen sharing in one tap, and drag in files, images, and clips up to 25 MB, which upload straight to object storage.

Is my team's data secure?

Data is encrypted in transit and at rest. Enterprise adds SSO and SAML, audit logs, data residency, and dedicated infrastructure for teams with compliance requirements.

Is Mesh production-ready?

Yes. Mesh runs in production on Go and Next.js, with a 99.9% uptime SLA available on Enterprise. The load-bearing ideas, gap-free ordering and reconnect backfill, are baked in rather than bolted on.

Ready to try Mesh?

It's live today. Open the app and see it for yourself.

Open MeshBack to products