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Open-source · Self-hosted · Encrypted

Talk to anyone.
In any language.
Without compromise.

LinguaChat is the world's first bilingual messenger combining context-aware AI translation, Signal-grade encryption, and a fully open-source self-hosted stack.

Get early access See how it works
200+
Languages
E2E
Encrypted
100%
Open-source
A
Ahmad Hassan
Arabic ↔ English
Are we still on for tomorrow's meeting?
↳ هل ما زلنا نلتقي غداً؟
نعم، الساعة الثالثة مناسبة تماماً!
↳ Yes, 3 PM works perfectly!
Great, I'll send the agenda shortly.
↳ رائع، سأرسل جدول الأعمال قريباً
Core capabilities

Everything you need.
Nothing you don't.

Built on open-source foundations so you stay in control of your data, translations, and infrastructure.

🌐
200-Language Translation
Powered by Meta's NLLB-200 model. Ollama + Mistral for nuanced context-aware conversations across 200 languages.
🔐
Signal-Grade Encryption
X3DH key exchange and Double Ratchet algorithm. AES-256-GCM before messages leave your device.
🧠
Context-Aware AI
Last 10–20 messages passed as context. Slang, names, and ongoing topics stay consistent throughout.
🖥️
Fully Self-Hosted
Run LibreTranslate and Ollama on your own server via Docker. Your data never touches external servers.
📱
Cross-Platform App
React Native + Expo — native iOS and Android from one codebase, with offline language detection.
⚡
Real-Time Delivery
Socket.IO and Redis Pub/Sub power sub-100ms delivery. Group chats, channels, and presence supported.
How it works

Four steps to borderless conversation

1
You send a message
Your message is encrypted client-side using Signal Protocol before leaving your device.
2
Server translates
Chat history + new message pass to NLLB-200 or Ollama for context-aware translation.
3
Re-encrypted delivery
Both original and translated versions are re-encrypted and delivered in milliseconds.
4
Dual-bubble display
Each party sees their own language. Tap any bubble to reveal the original.
What sets us apart

Exclusive features
no competitor offers

💬
Dual-bubble messaging
Both languages in every bubble. Tap to reveal the original. Enables passive language learning.
🎯
Tone-aware translation
Formal or casual — the LLM adapts translation style to conversation context automatically.
📖
Per-contact glossary
Learns names, nicknames, and recurring terms per contact and applies them consistently.
🟢
Confidence indicator
Color-coded confidence on every translated bubble. Tap to see alternative translations.
🎤
Voice note translation
Send a voice note — recipient gets it transcribed + translated via Whisper + NLLB.
🌍
Cultural context notes
When an idiom doesn't translate cleanly, a footnote explains the cultural meaning.
👥
Multilingual group chat
5 people, 4 languages — each member sees every message in their own language.
✨
"Say it better" assistant
Tap before sending to get a more culturally fluent phrasing in the recipient's language.
Under the hood

Built on proven open-source foundations

Translation engine
NLLB-200 + Ollama
Meta's 200-language model for fast translation. Ollama + Mistral for context-aware conversations.
NLLB-200OllamaLibreTranslate
Encryption
Signal Protocol
X3DH key exchange + Double Ratchet. AES-256-GCM for all stored messages. Forward secrecy.
libsignalX3DHAES-256-GCM
Real-time
Socket.IO + Redis
WebSocket delivery with Redis Pub/Sub fan-out for multi-server scalability. Sub-100ms latency.
Socket.IORedisNode.js
Mobile client
React Native + Expo
Single codebase for iOS and Android. On-device language detection. Secure enclave key storage.
React NativeExpoKeychain
Database
PostgreSQL + Prisma
Encrypted message storage with Prisma ORM. Redis for sessions, presence, and translation caching.
PostgreSQLPrismaRedis
Infrastructure
Docker + Self-hosted
One-command Docker Compose deployment. Runs on any VPS. No vendor lock-in, no API costs.
DockerFastifyRailway
Pricing

Simple, transparent pricing

Start free forever. Scale when you're ready. No per-message fees, ever.

Community
Free / forever
Self-hosted open-source edition. Full control, full privacy.
  • ✓Unlimited messages
  • ✓200-language translation
  • ✓E2E encryption
  • ✓Self-hosted on your server
  • ✓Community support
Most popular
Business
€49 / month
Managed hosted instance. We handle infra, you handle conversations.
  • ✓Up to 50 team members
  • ✓All Community features
  • ✓Tone-aware translation
  • ✓Voice note translation
  • ✓Priority email support
  • ✓99.9% uptime SLA
Enterprise
Custom
On-premise deployment, SSO, audit logs, white-label.
  • ✓Unlimited users
  • ✓All Business features
  • ✓On-premise deployment
  • ✓SSO + audit logs
  • ✓White-label option
  • ✓Dedicated support
About us

We believe language should never be a wall

LinguaChat is built by Tutorns — a team that has experienced language barriers firsthand, from business negotiations lost in translation to personal connections that never formed.

We set out to build the messenger we always wanted: one that speaks your language automatically, respects your privacy completely, and runs on infrastructure you control.

Privacy firstYour conversations belong to you. We design for zero-knowledge by default.
Open by defaultEvery line of code is open-source. Inspect it, fork it, contribute to it.
Accessibility for allThe free tier is genuinely free. Language access shouldn't cost money.
The team
S
Shoaib
Founder & CEO · Vision & Product
?
CTO · Open role
Signal Protocol · React Native · ML
?
AI/ML Lead · Open role
NLLB-200 · Ollama · NLP
?
GTM Advisor · Open role
B2B SaaS · European enterprise
📍 Based in Europe · Backed by Tutorns · Seed round open · Reach out →
Blog & press

Latest from LinguaChat

🔐
Engineering
How we combine Signal Protocol with real-time AI translation without breaking E2E encryption
A deep dive into our server-side decryption approach and the client-side alternative we're building.
April 20268 min read
🌍
Product
Why context matters: how 10 messages of history makes translation 3× more accurate
We tested single-message vs history-injected prompts across 12 language pairs. Results were striking.
March 20266 min read
📊
Market
5–6 billion people are locked out of natural communication. Here's how we're changing that.
The data behind language barriers in global messaging, and why now is the right moment to solve it.
February 20265 min read
Get in touch

Let's build together

Whether you're an investor, a potential team member, an enterprise customer, or someone who believes language shouldn't be a barrier — we want to hear from you.

✉️
hello@linguachat.io
📰
press@linguachat.io
💼
careers@linguachat.io
🔒
security@linguachat.io

Ready to break the language barrier?

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