Flarum

커뮤니케이션MITFreeWebSelf-Hosted

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

GitHub Repository Official Website

GitHub stars

Alternative to

Slack

커뮤니케이션

Discord

커뮤니케이션

Signal

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

AGPL-3.0Free

Dino

Modern XMPP chat client for the desktop with end-to-end encryption support

GPL-3.0Free

Revolt

User-first chat platform built with modern web technologies as an alternative to Discord

AGPL-3.0Free

Proton Mail

End-to-end encrypted email service based in Switzerland with zero-access encryption architecture

GPL-3.0Freemium

Mattermost

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

otherFreemium

Mailtrain

Self-hosted newsletter application with automation, segmentation, and campaign tracking features

GPL-3.0Free

Flarum

GitHub stars

Alternative to

Signal

Dino

Revolt

Proton Mail

Mattermost

Mailtrain

리뷰

Flarum

GitHub stars

Alternative to

Signal

Dino

Revolt

Proton Mail

Mattermost

Mailtrain

리뷰

Flarum

GitHub stars

Alternative to

Related Alternatives

Signal

Dino

Revolt

Proton Mail

Mattermost

Mailtrain

리뷰

Flarum

GitHub stars

Alternative to

Related Alternatives

Signal

Dino

Revolt

Proton Mail

Mattermost

Mailtrain

리뷰