tjena!chat
The privacy-first messenger from BiVi association — a FluffyChat fork, Matrix-based, hosted in Europe, free forever.
What is tjena!chat?
A messenger built on the open Matrix protocol — privacy-first, hosted in Europe, and connected to the entire Matrix network.
End-to-End Encryption
Every message is encrypted before it leaves your device. Only you and your recipient can read it.
Matrix Protocol
tjena!chat is built on Matrix, the open communication standard. You can message users on any other Matrix server worldwide.
All Platforms
Available as a web app and native apps for Android, iOS, Windows, macOS, and Linux.
Groups & Rooms
Create rooms of any size — from private group chats to public communities.
File Sharing
Send documents, photos, and voice messages securely and encrypted.
Open to the Whole Matrix Network
Your account on our server lets you send messages to users on any other Matrix server — no need to switch services.
Enhanced Matrix Clients
tjena!chat adds convenience features on top of the Matrix standard.
tjena!chat is a fork of FluffyChat, the popular open-source Matrix client — extended with additional features by the BiVi association.
Video & Voice Calls
Make encrypted video and voice calls directly in the app — no third-party service required.
Live Location Sharing
Share your real-time location with a contact or group, end-to-end encrypted and time-limited.
Status & Stories
Post a status update or photo visible to your contacts — see what your friends are up to at a glance.
Media Autosave
Photos and videos you receive are automatically saved to your device gallery.
Signal Bridge
Connect your Signal account through the tjena server bridge and chat with your Signal contacts directly from tjena!chat — one app, all your conversations.
Your own WhatsApp Bridge
Run the WhatsApp bridge on a spare phone at home with the tjena Bridge app. Your WhatsApp messages are only decrypted there and on your tjena devices — or use the tjena server bridge instead.
WhatsApp Calls
Call WhatsApp contacts and take their calls in tjena!chat — voice and video, through your own bridge (beta).
Android Contact Discovery
Find your phone contacts who are already on tjena!chat — privacy-preserving lookup so no raw contact data ever leaves your device.
Local Backups
Back up your encryption keys and chat history to your device storage — restore everything even after switching phones.
Bridge Management UI
Set up the server bridges or pair your own WhatsApp bridge by scanning a QR code — no bot commands or configuration files needed.
Signal & WhatsApp Bridges
Use your Signal and WhatsApp contacts directly inside tjena!chat — through the tjena server bridge, or through your own WhatsApp bridge on a spare phone at home, so your messages are only decrypted by you.
WhatsApp calls in tjena!chat
With your own WhatsApp bridge you can call your WhatsApp contacts — and they can call you — straight from tjena!chat. Your contacts just use WhatsApp as usual.
Voice and video
Start a voice or video call from any WhatsApp chat, switch the camera on mid-call, or flip between front and back camera.
Incoming calls ring in tjena
When a WhatsApp contact calls, tjena!chat rings with the normal call screen. Answer with video or audio only.
Stays on your phones
The call runs between your tjena app and your bridge phone at home, which passes it on to WhatsApp. The tjena server only connects them.
Every account
Works for each WhatsApp account on your bridge — tjena!chat calls from the account the chat belongs to.
How to turn it on
Own bridge
Set up your own WhatsApp bridge and link your WhatsApp account.
Set up calls
In tjena Bridge: WhatsApp tab → under your account, "Calls from tjena" → Set up. Enter the code in WhatsApp under Linked devices → Link a device → Link with phone number instead.
Call
In a WhatsApp chat in tjena!chat, tap the call button and choose Voice call or Video call.
Calls are in beta. One-to-one calls only. Calls use a second linked device in WhatsApp ("tjena calls").
How it works
Up and running in under a minute.
Download or open the app
Use the web app directly or install a native app on your device.
Create an account
Sign up with a username and email address — your email is used to verify your account and for recovery.
Add contacts
Share your username or scan a QR code — connect with friends even across other Matrix servers.
Start chatting
Send messages, files, and voice messages — all end-to-end encrypted.
See tjena!chat in action
Get tjena!chat
Available on every device — no account required to try the web app.