Secure Messaging Softwares and Apps

Discover best Secure Messaging softwares, apps and websites.

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Signal

Signal

Open Source

Signal is a secure, open-source messaging application that uses end-to-end encryption to protect user communications. It offers text messaging, voice and video calls, group chats, and file sharing, all with a strong focus on privacy and security. Available on multiple platforms, Signal is a leading choice for individuals prioritizing confidential conversations.

Strongest end-to-end encryption by default for all communication types.
Built-in File transfer
Security & Privacy Social & Communications
Threema

Threema

Commercial

Threema is a secure and private messaging application that prioritizes user anonymity and data protection. It offers end-to-end encryption for all messages, calls, and files, requiring no phone number registration to enhance privacy.

Strong end-to-end encryption for all communication types.
Encrypted chat
Social & Communications
Otr.to

Otr.to

Open Source

Otr.to is a secure, privacy-centric, browser-based chat client leveraging Off-the-Record (OTR) encryption. It offers peer-to-peer communication for enhanced anonymity and decentralization, making it a strong choice for private and secure instant messaging without requiring installations.

Strong OTR encryption for secure communication.
Browser based app
File Sharing Social & Communications
Kolab Now

Kolab Now

Commercial

Kolab Now is a comprehensive, secure, and privacy-focused web-based email and groupware suite. Built entirely on free and open-source software, it offers a full range of collaborative tools including email, calendar, contacts, and document management, prioritizing user data ownership and security.

Strong focus on user privacy and data security.
Collaborative
Backup & Sync Office & Productivity Online Services Security & Privacy
Sicher

Sicher

Commercial

Sicher is a freeware instant messaging application designed for enhanced privacy and security on mobile platforms like iOS, Android, and Windows Phone. It offers end-to-end encrypted messaging, secure file and media sharing, and features like self-destructing messages, focusing on keeping your conversations private.

Strong end-to-end encryption for all communication.
Encrypted chat
Social & Communications
Mailfence

Mailfence

Freemium

Mailfence is a secure, privacy-focused email service that provides end-to-end encryption and digital signatures using OpenPGP. It also includes a fully integrated suite of office tools like Calendar, Documents, and Contacts, all protected by strong security features.

Strong focus on privacy and security with built-in OpenPGP encryption.
Ad-free
Office & Productivity Security & Privacy Social & Communications
Zulip

Zulip

Open Source

Zulip is a powerful open-source group chat application designed for team collaboration. It uniquely structures conversations around topics, enabling users to easily catch up on important discussions and manage information overload. Zulip facilitates secure communication with integrated file sharing and various integrations.

Excellent at organizing complex conversations with its unique topic-based struct...
GitHub integration
Development Office & Productivity Social & Communications
Wire

Wire

Free

Wire is a secure, cross-platform messaging and collaboration client offering end-to-end encryption by default for all communication types including messaging, voice and video calls, and file sharing across desktop and mobile devices.

Strong, always-on end-to-end encryption for all communication.
Encrypted chat
Photos & Graphics Security & Privacy Social & Communications
Conversations

Conversations

Freemium

Conversations is a privacy-focused, open-source XMPP/Jabber client for Android. It offers robust end-to-end encryption using OMEMO and OTR, supports modern XMPP extensions, and provides a secure, decentralized messaging experience without relying on proprietary servers. It's an ideal choice for users prioritizing security and open standards.