Signal

Open source

Private messaging app offering end-to-end encrypted texts, voice and video calls for individuals and groups.

by Signal FoundationOfficial site ↗Source code ↗

Pricing: free
Free tier: true
License: open-source
Open source: Yes

Editorial review

Signal has not yet been editorially reviewed. User reviews and published field data below are unaffected — we say so rather than implying an editorial verdict.

Facts & attributes

Every value carries its evidence state. “—” means unknown — never a silent default (P-02).

Identity · Taxonomy

Tags(open-source;cloud-native): secure messaging, end-to-end encryption, privacy, voip, nonprofitVerification pending

Platform · Deployment

Delivery model(SaaS;self-hosted;desktop;mobile;embedded;managed-cloud;appliance): desktop, mobileVerification pending
Desktop apps(Windows;macOS;Linux): Windows, Mac, LinuxVerified

Pricing · Licensing

Free plan(true/false): trueVerification pending
License model(proprietary;open-source;source-available;dual-license): open-sourceVerification pending
Pricing model(free;subscription;usage;seat;asset;transaction;revenue-share;perpetual;custom): freeVerified
Source repository(HTTPS URL): https://github.com/signalapp/Signal-AndroidVerified
SPDX license IDs(Apache-2.0;MIT): AGPL-3.0Verified

Features · Product · Fit

Core capabilities(authoring;automation;analytics): End-to-end encrypted messaging, voice and video calls, Open source Signal Protocol encryption, Group chats with text, photos, videos and file sharing, No ads, no affiliate marketers, no trackingVerification pending

Support · Docs · Services

Support channels(email;ticket;chat;phone;community): community, support centerVerified

Audience · Use · Case

Best for(Neutral editorial summary): Individuals wanting private, end-to-end encrypted messaging and calls that is free with no ads or trackersVerification pending
Company-size fit(individual;SMB;mid-market;enterprise): individualVerification pending
Primary use cases(build;monitor;automate): Private personal messaging, Encrypted voice and video calls, Group communication with family, friends and coworkersVerification pending
Skill level(beginner;intermediate;advanced;specialist): beginnerVerification pending

Vendor · Maintainer

Founded year(2012): 2018Verified
Headquarters country(US): United StatesVerified
Vendor type(commercial;foundation;community;government;consortium;individual): foundationVerified

User reviews

Review policy

No published reviews yet.