Les meilleures alternatives Signal à 2025

Vous recherchez des alternatives à Signal ? Dans cette comparaison, nous examinons de plus près Signal ainsi que des solutions logicielles similaires comme Signal, Slack, Line for Windows, Imo Messenger, Telegram Desktop et Viber.

Notre tableau comparatif détaillé met en évidence les principales fonctionnalités, les prix et les performances de ces solutions phares, vous permettant de prendre une décision éclairée. Que vous recherchiez une fonctionnalité robuste, une conception conviviale ou des alternatives économiques, découvrez comment Signal, Slack, Line for Windows, Imo Messenger, Telegram Desktop et Viber se comparent pour trouver le logiciel idéal pour vos objectifs.

	Platform Support	Security and Privacy	Communication Features
Signal	Available on Android, iOS, desktop platforms including Windows, Mac, Debian-based Linux.	Added privacy with minimal user data collection, secure communication with encryption; known for strong security measures and privacy concerns are minimal.	Supports all message types including text, voice, video calls, group chats up to 150 participants, self-destructing messages.
Slack	Available on Android, iOS, desktop platforms with apps and web access.	Enterprise-grade security controls with data encryption and two-factor authentication.	Supports real-time messaging, channels for specific topics, file sharing across many types; advanced project management capabilities with workflows and alerts.
Line for Windows	Available on Android, Windows, Mac, and supports multiple devices and platforms.	Added security features but some privacy concerns exist; occasional glitches noted.	Supports instant messaging, voice and video calls, group chats up to 500 users, stickers, file sharing in various formats.
Imo Messenger	Available on Android and iOS platforms; supports web browsers.	Increased privacy and encryption mentioned but some bugs and occasional glitches reported.	Supports instant messaging, voice and video calls, group chats up to 30 members, multimedia file sharing in various languages with stickers.
Telegram Desktop	Cross-platform functionality including Linux, macOS, Windows, mobile versions.	Secure communication with end-to-end encryption for secret chats; no video call feature on desktop.	Supports instant messaging, group voice chats, file sharing, multiple accounts; lacks video call feature on desktop; seamless sync between devices.
Viber	Available on multiple devices and platforms including desktop and smartphones.	Secure messaging with automatic backups; some privacy concerns noted; uses data encryption.	Supports free voice and video calls internationally, group chats up to 200 users, fun stickers; low-cost international calling rates.

Platform Support

Signal	Available on Android, iOS, desktop platforms including Windows, Mac, Debian-based Linux.
Slack	Available on Android, iOS, desktop platforms with apps and web access.
Line for Windows	Available on Android, Windows, Mac, and supports multiple devices and platforms.
Imo Messenger	Available on Android and iOS platforms; supports web browsers.
Telegram Desktop	Cross-platform functionality including Linux, macOS, Windows, mobile versions.
Viber	Available on multiple devices and platforms including desktop and smartphones.

Security and Privacy

Signal	Added privacy with minimal user data collection, secure communication with encryption; known for strong security measures and privacy concerns are minimal.
Slack	Enterprise-grade security controls with data encryption and two-factor authentication.
Line for Windows	Added security features but some privacy concerns exist; occasional glitches noted.
Imo Messenger	Increased privacy and encryption mentioned but some bugs and occasional glitches reported.
Telegram Desktop	Secure communication with end-to-end encryption for secret chats; no video call feature on desktop.
Viber	Secure messaging with automatic backups; some privacy concerns noted; uses data encryption.

Communication Features

Signal	Supports all message types including text, voice, video calls, group chats up to 150 participants, self-destructing messages.
Slack	Supports real-time messaging, channels for specific topics, file sharing across many types; advanced project management capabilities with workflows and alerts.
Line for Windows	Supports instant messaging, voice and video calls, group chats up to 500 users, stickers, file sharing in various formats.
Imo Messenger	Supports instant messaging, voice and video calls, group chats up to 30 members, multimedia file sharing in various languages with stickers.
Telegram Desktop	Supports instant messaging, group voice chats, file sharing, multiple accounts; lacks video call feature on desktop; seamless sync between devices.
Viber	Supports free voice and video calls internationally, group chats up to 200 users, fun stickers; low-cost international calling rates.

Choisir le bon logiciel ne se résume pas aux fonctionnalités. La taille, le type de licence, les avis des utilisateurs et la popularité comptent aussi.

Ce comparatif rapide montre comment Signal se positionne face à Signal, Slack, Line for Windows, Imo Messenger, Telegram Desktop et Viber sur ces points clés pour vous aider à choisir la meilleure alternative.

	Taille	Licence	Popularité
Signal	261,9MB	Open Source	13%
Slack	64MB	Commercial	0%
Line for Windows	33,4MB	Commercial	11%
Imo Messenger	46,3MB	Commercial	0%
Telegram Desktop		Logiciel gratuit	100%
Viber	1,3MB	Logiciel gratuit	16%

Taille

Signal	261,9MB
Slack	64MB
Line for Windows	33,4MB
Imo Messenger	46,3MB
Telegram Desktop
Viber	1,3MB

Licence

Signal	Open Source
Slack	Commercial
Line for Windows	Commercial
Imo Messenger	Commercial
Telegram Desktop	Logiciel gratuit
Viber	Logiciel gratuit

Notation

Signal
Slack
Line for Windows
Imo Messenger
Telegram Desktop
Viber

Popularité

Signal	13%
Slack	0%
Line for Windows	11%
Imo Messenger	0%
Telegram Desktop	100%
Viber	16%