ntfy

KomunikaceApache-2.0FreeWebAndroidiOSSelf-Hosted

Simple HTTP-based push notification service for sending alerts to phones and desktops

GitHub Repository Official Website

GitHub stars

Alternative to

Slack

Komunikace

Signal

Private messenger with end-to-end encryption for secure text, voice, and video communication

AGPL-3.0Free

Galene

Lightweight videoconference server optimized for large groups with low bandwidth requirements

MITFree

Zulip

Organized team chat with topic-based threading that combines email and chat for productivity

Apache-2.0Freemium

Briar

Decentralized messaging app designed for activists and journalists with offline peer-to-peer support

GPL-3.0Free

Mattermost

Secure team messaging platform with channels, file sharing, and workflow automation for enterprises

otherFreemium

Flarum

Simple and beautiful forum software with a fast, extensible, and mobile-friendly design

MITFree

ntfy

GitHub stars

Alternative to

Signal

Galene

Zulip

Briar

Mattermost

Flarum

Recenze

ntfy

GitHub stars

Alternative to

Signal

Galene

Zulip

Briar

Mattermost

Flarum

Recenze

ntfy

GitHub stars

Alternative to

Related Alternatives

Signal

Galene

Zulip

Briar

Mattermost

Flarum

Recenze

ntfy

GitHub stars

Alternative to

Related Alternatives

Signal

Galene

Zulip

Briar

Mattermost

Flarum

Recenze