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OPERATING SYSTEMS & VIRTUALIZATION
SELF-HOSTABLE
STABLE
FREE
Kontalk

KONTALK

Kontalk is a community-driven, encrypted instant messaging network. With end-to-end encryption and open-source software, users enjoy secure, decentralized communication. Built on XMPP, Kontalk offers a free, forever solution for mobile phones and desktops, empowering users with a trusted, volunteer-run platform for private conversations.

GITHUB STARS
579
+12% this month
FORKS
189
Active community
LAST PUSH
Apr 24, 2026
Stable
WATCHERS
44
Tracking updates
LICENSE
GPL-3.0
Commercial use
**Kontalk** is a messaging network that runs encrypted instant messaging. It is built for community users who need secure communication. Kontalk operates as a decentralized, volunteer-run platform.

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

Java
Java
Kotlin
Kotlin
Shell
Shell
Python
Python

VISUAL INTERFACE

Screenshot 1
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The Quick Glance

Status
Dormant
Category
Operating Systems & Virtualization
Pricing
Free
Self-Hosted
Yes
Available on
Windows
macOS
Linux
Latest Release
v4.4.0
Jul 4, 2020

Relative Standing — across 1,284 tools

STARS579
Top 82% globally
FORKS189
Top 66% in Open Source
ACTIVITYLow
Top 93% Activity
WATCHERS44
Top 53% Community