Cal.com

コミュニケーションAGPL-3.0FreemiumWebSelf-Hosted

Scheduling infrastructure for individuals and businesses with calendar sync and booking pages

GitHub Repository Official Website

GitHub stars

Alternative to

Zoom

コミュニケーション

mailcow

Dockerized email server suite with webmail, antispam, antivirus, and administration interface

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Encrypted email service with end-to-end encryption, calendar, and contacts for secure communication

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SchildiChat

Matrix-based messenger with end-to-end encryption and a familiar messaging experience

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Flarum

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

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Decentralized chat application that works over email with automatic end-to-end encryption

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Cal.com

GitHub stars

Alternative to

mailcow

Tuta

SchildiChat

Flarum

Delta Chat

Proton Mail

レビュー

Cal.com

GitHub stars

Alternative to

mailcow

Tuta

SchildiChat

Flarum

Delta Chat

Proton Mail

レビュー

Cal.com

GitHub stars

Alternative to

Related Alternatives

mailcow

Tuta

SchildiChat

Flarum

Delta Chat

Proton Mail

レビュー

Cal.com

GitHub stars

Alternative to

Related Alternatives

mailcow

Tuta

SchildiChat

Flarum

Delta Chat

Proton Mail

レビュー