Showing 371 open source projects for "secure linux"

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  • 1
    Telegram Desktop

    Telegram Desktop

    Telegram Desktop messaging app

    Telegram Desktop is the official C++/Qt-based cross-platform client for Telegram, implementing the full Telegram API and MTProto protocol for secure messaging, voice/video calls, file sharing, and chat features. It provides message sync across devices, supports themes, stickers, bots, and is actively maintained.
    Downloads: 657 This Week
    Last Update:
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  • 2
    NATS

    NATS

    Server for NATS.io, the cloud and edge native messaging system

    With flexible deployments models using clusters, superclusters, and leaf nodes, optimize communications for your unique deployment. The NATS Adaptive Edge Architecture allows for a perfect fit for unique needs to connect devices, edge, cloud or hybrid deployments. With true multi-tenancy, securely isolate and share your data to fully meet your business needs, mitigating risk and achieving faster time to value. Security is bifurcated from topology, so you can connect anywhere in a deployment...
    Downloads: 123 This Week
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  • 3
    Session Desktop

    Session Desktop

    A Decentralized, Onion Routed, Private Messenger

    Session Desktop is an open-source, privacy-focused messaging application that brings secure, decentralized communication to desktop environments such as Windows, macOS, and Linux, providing users with encrypted text, media, and group chats without requiring phone numbers or email addresses. Built on the Session protocol and the Loki network, it routes messages through a distributed onion-routing network that hides metadata like sender, timing, and location so that conversations are resistant to surveillance and correlation attacks. ...
    Downloads: 49 This Week
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  • 4
    ArmCord

    ArmCord

    ArmCord is a custom client designed to enhance your Discord experience

    ...This means you can have a much more stable and secure experience, along with slightly better performance.
    Downloads: 64 This Week
    Last Update:
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  • 5
    Element

    Element

    A glossy Matrix collaboration client for the web

    Element, formerly known as Vector and Riot, is a glossy Matrix collaboration client built using the Matrix React SDK. It offers teams, friends and organizations a secure, all in one chat app that is protected from pesky ads and data mining methods. All communications are done through the open global Matrix network, secured with end-to-end encryption. Element gives you all the services you need from a chat app: group chat, video calls, file sharing and more-- all done securely and in total...
    Downloads: 18 This Week
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  • 6
    libsignal

    libsignal

    Home to the Signal Protocol and other cryptographic primitives

    libsignal is the foundational cryptographic library that implements the Signal Protocol and other essential primitives used across the official Signal clients and servers, enabling secure end-to-end encrypted communication. Written primarily in Rust with bindings and APIs surfaced for Java, Swift, and TypeScript, this library encapsulates critical algorithms like the Double Ratchet, prekey mechanisms, secure key storage, and zero-knowledge group primitives, along with additional utilities...
    Downloads: 1 This Week
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  • 7
    LocalSend

    LocalSend

    An open-source cross-platform alternative to AirDrop

    LocalSend is a free, open-source app that allows you to securely share files and messages with nearby devices over your local network without needing an internet connection. LocalSend is a cross-platform app that enables secure communication between devices using a REST API and HTTPS encryption. Unlike other messaging apps that rely on external servers, LocalSend doesn't require an internet connection or third-party servers, making it a fast and reliable solution for local communication.
    Downloads: 224 This Week
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  • 8
    ownCloud

    ownCloud

    ownCloud web server core (Files, DAV, etc.)

    ownCloud Core is the foundational server component of the ownCloud ecosystem, providing a self-hosted platform for secure file storage, synchronization, and sharing across devices and teams. It enables organizations and individuals to maintain full control over their data by running a personal cloud on their own infrastructure rather than relying on third-party providers. The software supports collaborative workflows by allowing users to upload, organize, and share files through a web...
    Downloads: 184 This Week
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  • 9
    Status - a Mobile Ethereum OS

    Status - a Mobile Ethereum OS

    A free (libre) open source, mobile OS for Ethereum

    Status is a secure messaging app, crypto wallet, and Web3 browser built with state-of-the-art technology. Integrated into one powerful super app for private secure communication. Safely send, store and receive cryptocurrencies including ERC20 and ERC721 tokens with the Status crypto wallet. Only you hold the keys to your funds. Status' intuitive design protects you and your funds from attacks. Status uses an open-source, peer-to-peer protocol, and end-to-end encryption to protect your...
    Downloads: 0 This Week
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  • 10
    Cinny

    Cinny

    Yet another matrix client

    Cinny is an open-source Matrix client that focuses on delivering a simple, elegant, and secure instant messaging experience built on decentralized communication technology. As a web-based Matrix client, Cinny emphasizes a modern and streamlined interface, clean navigation between direct messages and channels, and a design that prioritizes clarity and ease of use while preserving strong security through end-to-end encryption. Users can self-host Cinny, deploy it via Docker or as a static web...
    Downloads: 0 This Week
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  • 11
    Tox

    Tox

    A New Kind of Instant Messaging

    Tox is a peer to peer (serverless) instant messenger that focuses on security and privacy. In today's world where digital surveillance is rampant, Tox offers users a communication software alternative that's free from prying eyes and ears, and is, quite literally free and without advertising. Tox comes with all the great features you'd expect from an instant messenger application, including voice calls, video calls, file sharing and screen sharing. Everything done on Tox is encrypted...
    Downloads: 11 This Week
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  • 12
    EdgeVPN

    EdgeVPN

    The immutable, decentralized, statically built p2p VPN

    Fully Decentralized. Immutable. Portable. Easy to use Statically compiled VPN and a reverse proxy over p2p. EdgeVPN uses libp2p to build private decentralized networks that can be accessed via shared secrets.
    Downloads: 16 This Week
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  • 13
    Mixin Messenger

    Mixin Messenger

    Mixin Messenger desktop app for macOS, iPadOS, Linux, and Windows

    Mixin Messenger is a free, open-source messaging application designed for secure communication across desktop and mobile devices. Its Flutter-based client supports Windows, macOS, Linux, and iPadOS. The software uses the Signal Protocol to provide end-to-end encryption for messages, photos, audio, and shared files. Users can participate in private conversations and group chats while maintaining control over their communication privacy.
    Downloads: 3 This Week
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  • 14
    Tutanota

    Tutanota

    Open source email service with a strong focus on security and privacy

    Tutanota is an open source email client focused on security and privacy. It is built with end-to-end encryption and 2FA, so you can be assured of utmost email security. Tutanota is always encrypted, so whether you’re using their secure webmail client, mobile apps or desktop clients, you can be sure to communicate securely.
    Downloads: 26 This Week
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  • 15
    Sideband

    Sideband

    LXMF client for Android, Linux and macOS to communicate with people

    Sideband is a privacy-focused, peer-to-peer mesh messaging protocol and platform that allows users to communicate directly over local networks or the internet without servers. It emphasizes metadata resistance and secure message delivery, working effectively in offline, low-bandwidth, or disaster recovery scenarios. Built-in Rust, Sideband supports encrypted group messaging, file transfers, and network self-discovery. It is ideal for use in community networks, crisis response, and...
    Downloads: 19 This Week
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  • 16
    AltSendme

    AltSendme

    Send files and folders anywhere in the world without storing in cloud

    Alt-Sendme is a free, open-source peer-to-peer file transfer tool that allows users to send files and folders directly between devices without relying on cloud storage or intermediary accounts. Built with modern networking principles, it provides a secure, end-to-end encrypted connection that prioritizes privacy, so personal data is not stored on third-party servers during transfer. Users can share files of any size and format easily, which makes Alt-Sendme a flexible alternative to services...
    Downloads: 30 This Week
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  • 17
    Mumble

    Mumble

    Mumble is an open-source, low-latency, high quality voice chat

    Mumble is an open-source, low-latency, high-quality voice chat software. There are two modules in Mumble; the client (mumble) and the server (murmur). The client works on Windows, Linux, FreeBSD, OpenBSD, and macOS, while the server should work on anything Qt can be installed on. Low-latency and high-quality voice-chat program written on top of Qt and Opus. Administrators appreciate Mumble for being able to self-host and have control over data security and privacy. Some make use of the...
    Downloads: 20 This Week
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  • 18
    phpseclib

    phpseclib

    PHP secure communications library

    phpseclib is designed to be ultra-portable. The 3.0 version works on PHP 5.6+ and doesn't require any extensions. For purposes of speed, OpenSSL, GMP, libsodium or mcrypt are used, if they're available, but they are not required. phpseclib is designed to be fully interoperable with standardized cryptography libraries and protocols. MIT-licensed pure-PHP implementations of SSH-2, SFTP, X.509, an arbitrary-precision integer arithmetic library, Ed25519 / Ed449 / Curve25519 / Curve449, ECDSA /...
    Downloads: 16 This Week
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  • 19
    Simple Machines Forum (SMF)

    Simple Machines Forum (SMF)

    Open-source community forum software

    Simple Machines Forum (SMF) is a free, open-source forum software package written in PHP, offering a full-featured community platform with support for user groups, moderation, theming, and plugins. It’s designed to be fast, secure, and customizable, making it ideal for creating online communities of any size.
    Downloads: 3 This Week
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  • 20
    xmpp.js

    xmpp.js

    XMPP for JavaScript

    xmpp.js is a JavaScript library for the Extensible Messaging and Presence Protocol (XMPP), facilitating real-time communication features like instant messaging and presence information.
    Downloads: 0 This Week
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  • 21
    Cinny Desktop

    Cinny Desktop

    Yet another matrix client for desktop

    ...The client supports message reactions, threads, and customizable emoji and sticker packs. Voice and video communication capabilities are available through supported calling integrations. Distributed for Windows, macOS, and Linux, Cinny Desktop combines Matrix communication features with a lightweight desktop application architecture.
    Downloads: 0 This Week
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  • 22
    Signal Desktop

    Signal Desktop

    Private messenger for Windows, Mac, and Linux

    Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect. State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else can either. Privacy isn’t an optional mode, it’s just the way that Signal works. Every message, every call, every time. Share text, voice messages, photos, videos, GIFs and files for...
    Downloads: 31 This Week
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  • 23
    Hyperledger FireFly

    Hyperledger FireFly

    Hyperledger FireFly is the first open source Supernode

    Hyperledger FireFly is the first open source Supernode: a complete stack for enterprises to build and scale secure Web3 applications. The FireFly API for digital assets, data flows, and blockchain transactions makes it radically faster to build production-ready apps on popular chains and protocols. Hyperledger FireFly has a pluggable microservices architecture. Everything is pluggable, from the Blockchain technology, token ERC standards, and custom smart contracts, all the way to the event...
    Downloads: 0 This Week
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  • 24
    Synapse

    Synapse

    Matrix reference homeserver

    Matrix is an ambitious new ecosystem for open federated Instant Messaging and VoIP. Everything in Matrix happens in a room. Rooms are distributed and do not exist on any single server. Rooms can be located using convenience aliases like #matrix:matrix.org or #test:localhost:8448. Synapse is currently in rapid development, but as of version 0.5 we believe it is sufficiently stable to be run as an internet-facing service for real usage! Create and manage fully distributed chat rooms with no...
    Downloads: 15 This Week
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  • 25
    Meron

    Meron

    Fast, secure email client with chat and kanban views

    Meron is a free, open-source email client designed to combine traditional email management with chat-style conversations and Kanban organization. It provides a unified inbox for managing multiple email accounts through IMAP and SMTP. Users can switch between conventional email, threaded chat, and Kanban board views. The software includes customizable tags, automated filtering rules, and rich-text message composition. It also supports RSS and Atom feeds for following online publications....
    Downloads: 0 This Week
    Last Update:
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