Default message encryption
Protects one-to-one and group chats automatically
Communication
Security & Privacy
Signal
Signal is a free private messenger that handles encrypted chats, group conversations, and calls without ads or behavioral tracking.
Runs on
Windows
macOS
Linux
Android
iOS
Available on
App Store
Play Store
Built for
Remote Teams
Communities
Everyday Users
Overview
What is Signal?
Private messaging without an ad model
Signal is built for conversations that should not become advertising data. Messages, group chats, voice calls, and video calls use end-to-end encryption by default, including communication with other Signal users. Registration still depends on a phone number, though usernames let people connect without revealing it. The nonprofit service is free, has no premium tier, and accepts donations.
What daily use feels like
- Linked desktop apps make longer conversations practical, but the phone-first setup remains.
- Disappearing messages, view-once media, and screen security controls cover common sensitive exchanges.
- Groups support mentions, admin controls, invite links, and group calls without turning Signal into a workplace suite.
- The interface is familiar and uncluttered, but contact discovery can feel sparse when friends use WhatsApp or iMessage.
- Moving chat history between devices is more restrictive than cloud-backed messengers, especially across mobile platforms.
Capabilities
Key features
Private voice calls
Encrypted calling without a separate subscription
Group video calls
Face-to-face conversations for private groups
Disappearing message timers
Removes messages after a chosen interval
Username sharing
Connect without exposing your phone number
Linked desktop apps
Continue conversations on Windows, macOS, or Linux
Keep exploring
Teams also considered
Keeping chat, meetings, files, and day-to-day coordination in one place is the job Microsoft Teams handles best, particularly for organizations already using Microsoft 365.
Google Workspace teams reach for Google Chat when they want messaging, shared Spaces, and quick Meet calls tied closely to Gmail, Drive, Calendar, and company accounts.
Coordinating teams and multiple work tools in one place is complex; Slack organizes conversations, alerts, files, and collaborations to cut email clutter and keep teams aligned.
Still weighing your options?
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