Linux Softwares to End-to-End Encryption

Gajim is a free and open-source instant messaging client for the XMPP protocol. Built using the GTK+ toolkit, it offers a wide array of features for secure and flexible communication, including encrypted chat, group conversations, multi-protocol support via gateways, and extensive customization options.

pCloud offers a robust cloud storage solution for individuals and businesses, emphasizing security and ease of access. It provides a secure place to store, sync, and share files from any device.

Enigmail is a robust extension for Mozilla Thunderbird and SeaMonkey, providing comprehensive OpenPGP encryption and digital signing for your email communications. It integrates seamlessly into these email clients, offering a user-friendly way to protect your privacy and ensure the authenticity of your messages.

ADrive offers a comprehensive suite of cloud storage, file management, and backup solutions designed for individuals, businesses, and enterprises, providing secure and accessible data handling.

Jungle Disk is a comprehensive online backup software service offering cloud backup, sync, and security solutions for businesses and individuals. It provides reliable data protection with features like end-to-end encryption and flexible storage options, including support for Amazon S3.

TorChat is a defunct decentralized anonymous instant messenger leveraging Tor hidden services for secure text communication and file sharing without central servers.

CloudMe is a versatile cloud storage and synchronization service providing secure file keeping, seamless sync across devices, and integrated media streaming capabilities. It offers a centralized platform for managing your digital life.

WizNote is a feature-rich, cross-platform cloud-based note-taking application designed for individuals and teams. It offers robust tools for capturing, organizing, and sharing information, with a strong focus on productivity and knowledge management.

Rocket.Chat is a comprehensive free and open-source team communication platform, offering real-time chat, audio/video conferencing, screen sharing, and file sharing. Designed for flexibility, it can be self-hosted on-premises for maximum control and customization, making it ideal for organizations prioritizing data privacy and security.

Paperwork is an open-source, self-hosted alternative to popular note-taking and archiving applications like Evernote and OneNote. It offers a powerful suite of features for creating, organizing, and managing notes and documents with a strong emphasis on privacy and control.

ICQ is a veteran instant messaging platform offering a wide range of communication features, including text chat, voice and video calls, screen sharing, and group chats. It aims to provide a reliable and feature-rich messaging experience with a focus on privacy and security.

Ring (SFLphone) is a free and open-source communication platform offering secure messaging, voice, and video calls. It leverages decentralization and end-to-end encryption for enhanced privacy across multiple operating systems including Linux, Windows, macOS, and Android.

Tresorit is a leading cloud storage and collaboration platform for businesses, prioritizing end-to-end encryption and zero-knowledge architecture. It offers secure file sharing, synchronization, and online backup, ensuring data privacy and compliance with stringent regulations.

Cozy is a personal cloud platform designed to give users control over their digital lives. Store, sync, and share your photos, files, contacts, and calendar in a private and secure environment. It offers a suite of integrated applications to manage your data.

Storage Made Easy is a versatile hybrid Cloud File Server and Enterprise File Share and Sync (EFSS) solution. It allows organizations to unify access to various cloud storage services and on-premises storage, providing a single pane of glass for managing files across disparate locations while prioritizing security, control, and collaboration.

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.

Mattermost is an open-source, self-hosted platform for secure team collaboration, offering a Slack-alternative with emphasis on data control, privacy, and customizability. It provides a range of communication and project management tools for distributed and technical teams.

Psi is a robust, open-source instant messaging client built on the XMPP protocol. It's known for its focus on speed, efficiency, and adherence to XMPP standards, offering a clean interface and strong privacy features for secure and reliable communication.

OwnDrive is a comprehensive online storage and collaboration platform designed for individuals, professionals, and businesses. It offers a secure space to store, back up, share, and synchronize files across various devices, alongside integrated tools for calendar, contacts, and media management.

Koofr is a secure, EU-based cloud storage service offering a generous free tier and the unique ability to connect multiple existing cloud accounts from providers like Google Drive, Dropbox, and OneDrive. It serves as a centralized hub for all your digital files, enhancing accessibility and management across platforms.

RetroShare is a secure, decentralized, and open-source communication platform built on a friend-to-friend network, offering encrypted file sharing, serverless email, instant messaging, and forums.

Nextcloud is an open-source, self-hosted platform for file synchronization, sharing, and collaboration. It provides a private alternative to commercial cloud storage services, offering a comprehensive suite of tools including file management, calendar, contacts, and notes, all under your control.

Linphone is a free and open-source Voice over IP (VoIP) application and SIP client available on multiple platforms. It enables encrypted voice and video calls, instant messaging, and file sharing, offering a privacy-focused communication solution.

Pulse is a free and secure decentralized file synchronization engine developed by Ind.ie. Designed with privacy and control in mind, it allows users to synchronize files and folders directly between devices without relying on central servers, promoting data ownership and resilience. While discontinued, it represents an important effort towards decentralized file management.

Seafile is a powerful and secure file-hosting and collaboration platform designed for teams and businesses. It offers robust file synchronization, sharing, and versioning capabilities, with a strong focus on privacy and control through both cloud and self-hosted options.

TeamDrive is a robust software solution specializing in secure file synchronization and sharing with an emphasis on end-to-end encryption. Designed for collaborative work, it ensures data privacy and compliance, making it ideal for businesses requiring high levels of data protection and user-controlled hosting options.

TeamSpeak is a leading voice communication software designed for crystal-clear audio, minimal latency, and high security. Perfect for online gaming, team collaboration, and large community interactions, it offers unparalleled control over your communication server and prioritizes user privacy.

Duplicati is a robust, free, and open-source backup client that securely stores encrypted, compressed, and incrementally updated backups on various cloud storage services, remote servers, or local drives. It's designed for both technical users and those who prefer a guided configuration.

Leanote is a versatile self-hosted note-taking application that blends rich text editing with Markdown support. It offers seamless synchronization across multiple devices and features built-in blog publishing capabilities, making it a powerful tool for both personal information management and content creation.

Firefox Sync seamlessly synchronizes your browsing data across all your devices running Firefox. Access tabs, bookmarks, history, passwords, and preferences from your desktop, laptop, or mobile phone, ensuring a consistent and personalized browsing experience wherever you go.