Showing 884 open source projects for "portable email client"

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  • 1
    Portable OpenSSH

    Portable OpenSSH

    Complete implementation of the SSH protocol

    ...The software suite enables administrators and developers to securely log into remote systems, transfer files, and create encrypted tunnels for network traffic. By encrypting all communications between client and server, it protects against threats such as eavesdropping, connection hijacking, and data interception. The portable distribution follows the development of the main OpenSSH codebase while adding compatibility layers for multiple operating systems and authentication systems.
    Downloads: 10 This Week
    Last Update:
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  • 2
    Eclipse Mail

    Eclipse Mail

    eMail is a fork of Interlink for IA-32 i686 with more optimizations.

    Eclipse Mail is a fork of Interlink Mail and News made for Windows XP and runs on IA-32 i686 platforms. Some advantages over upstream and roytam1's mailnews are more optimizations and better interoperability with upstream. (using SQL storage intead of DBM)
    Downloads: 3 This Week
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  • 3
    Thunderbird for iOS

    Thunderbird for iOS

    Open Source Email App for iOS

    Thunderbird iOS is the official iPhone and iPad email client offering from the Thunderbird project, bringing the capabilities of a feature-rich, open-source email experience to iOS devices with native UI and Apple platform integrations. The app gives users a powerful tool for managing multiple email accounts, including IMAP and POP3 configurations, and supports modern authentication flows like OAuth for popular providers.
    Downloads: 37 This Week
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  • 4
    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: 17 This Week
    Last Update:
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  • 5
    Mailspring

    Mailspring

    A faster, leaner email client and fork of Nylas Mail

    Mailspring is a fast and lean mail client that’s a new version of Nylas Mail. It’s maintained by one of Nylas Mail’s original authors, with plenty of great features and enhancements such as a new C++ sync engine that allows it to use 50% less RAM. Heavy dependencies have also been removed and the package manager rewritten for even greater speed. Written in TypeScript with Electron and React, it is cross-platform (macOS, Windows and Linux) and designed to be easy to extend.
    Downloads: 29 This Week
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  • 6
    K-9 Mail

    K-9 Mail

    Open Source Email App for Android

    K-9 Mail is an advanced, open-source email client for Android that's focused on making it easy to chew through large volumes of email. It's designed to be easy to use by both novice and power users, with plenty of useful features. It has IMAP push email support, support for multiple accounts, support for POP3 and Exchange 2003/2007 (with WebDAV), flagging, filing, signatures and more!
    Downloads: 5 This Week
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  • 7
    Anymail

    Anymail

    Django email backends and webhooks for Amazon SES, Mailgun, Mailjet

    ...Extensions to expose common ESP-added functionality, like tags, metadata, and tracking, with code that’s portable between ESPs. Inbound message support, to receive email through your ESP’s webhooks, with simplified, portable access to attachments and other inbound content. Anymail maintains compatibility with all Django versions that are in mainstream or extended support, plus (usually) a few older Django versions, and is extensively tested on all Python versions supported by Django.
    Downloads: 2 This Week
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  • 8
    Foundation for Emails

    Foundation for Emails

    Design responsive HTML emails that work on any device & email client

    Foundation for Emails is a framework that allows you to create responsive HTML emails that work on any device and on any email client, even Outlook. All of its HTML/CSS components have been tested, ensuring consistency across every major email client. Foundation for Emails consists of a solid set of customizable components, including a fully responsive grid, typography, alignment classes and more. It also has a new templating language, Inky, that makes it easier than ever to write HTML emails. ...
    Downloads: 0 This Week
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  • 9
    Thunderbird for Android

    Thunderbird for Android

    Open Source Email App for Android (fka K-9 Mail)

    Thunderbird Android is the mobile counterpart of the popular Thunderbird email client, reimagined for Android phones and tablets so users can access, send, and organize email from multiple accounts with advanced features found in desktop clients. It embraces modern mobile UI design while supporting robust email protocols (IMAP/POP3) and standards like OAuth for secure logins to services such as Gmail, Outlook, or custom mail providers.
    Downloads: 6 This Week
    Last Update:
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  • 10
    Proton Mail for Android

    Proton Mail for Android

    Proton Mail Android app

    ...It supports composing messages, viewing attachments, handling contacts, and configuring account and mail settings from within the app, giving users portable access to their secure inbox wherever they go. Because ProtonMail’s service never sees unencrypted content, the Android client performs necessary encryption and decryption on the device, aligning with Proton’s privacy-first philosophy and open-source security model.
    Downloads: 0 This Week
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  • 11
    Proton Mail Bridge

    Proton Mail Bridge

    Proton Mail Bridge application

    Proton Mail Bridge is a desktop application that runs in the background on Windows, macOS, and Linux to enable users to access their Proton Mail encrypted email accounts with traditional email clients like Outlook, Thunderbird, Apple Mail, and others via local IMAP/SMTP servers. Because standard IMAP cannot natively decrypt end-to-end encrypted messages, Bridge acts as a translator that downloads encrypted mail, decrypts it locally, and serves it to your preferred mail client over a local server, while encrypting outgoing messages before they’re sent to Proton’s servers. ...
    Downloads: 20 This Week
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  • 12
    Steam Achievement Manager

    Steam Achievement Manager

    A manager for game achievements in Steam

    Steam Achievement Manager is a lightweight, portable desktop application designed to give users direct control over achievements and statistics associated with their Steam games. It works by interfacing with the Steam client and APIs, allowing users to unlock, relock, or modify achievements without needing to launch the actual game. The tool provides a simple interface where users can browse their game library, select a title, and view all available achievements in a structured format. ...
    Downloads: 205 This Week
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  • 13
    OpenSSH

    OpenSSH

    Win32 port of OpenSSH

    OpenSSH is a complete implementation of the SSH protocol (version 2) for secure remote login, command execution and file transfer. It includes a client ssh and server sshd, file transfer utilities scp and sftp as well as tools for key generation (ssh-keygen), run-time key storage (ssh-agent) and a number of supporting programs. This is a port of OpenBSD's OpenSSH to most Unix-like operating systems, including Linux, OS X and Cygwin. Portable OpenSSH polyfills OpenBSD APIs that are not available elsewhere, adds sshd sandboxing for more operating systems and includes support for OS-native authentication and auditing (e.g. using PAM). ...
    Downloads: 353 This Week
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  • 14
    IP via Email

    IP via Email

    IP notification and information of your remote computer by email

    This program will let you know the IP address of your home computer (or your office computer), that you want to use remotly with VNC programs (as RealVNC, UltraVNC and TightVNC), via the your email and/or client mode of the program and/or enabling the automatic publishing of your IP on the site www.ipviaemail.somee.com/dynamic-ip by creating your own user id and password. IP via Email is versatile and lightweight, essential for the smart working of workers and students who have a dynamic IP connection, but also for companies and professionals who prioritize data and work security through VPN connections with dynamic IP. ...
    Downloads: 3 This Week
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  • 15
    µTorrent

    µTorrent

    Fast, efficient torrent downloader with minimal resource consumption

    µTorrent is the world's most popular BitTorrent client, designed for speed and efficiency. This compact software enables seamless peer-to-peer file sharing with minimal CPU and memory usage. Perfect for users seeking reliable torrent downloads without system slowdown. The intuitive interface makes torrent management simple, while advanced features like bandwidth prioritization, RSS feed support, and remote access satisfy power users. Built-in encryption ensures secure connections, and the...
    Downloads: 3,138 This Week
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  • 16
    SMTP Tunnel Proxy

    SMTP Tunnel Proxy

    A high-speed covert tunnel that disguises TCP traffic as SMTP email

    SMTP Tunnel Proxy is a high-speed covert tunneling proxy that disguises regular TCP traffic as legitimate SMTP email communication to evade deep packet inspection (DPI) firewalls and censorship systems. It implements a SOCKS5 proxy interface on the client that wraps outbound traffic into an SMTP-like handshake (EHLO, STARTTLS, AUTH) and encrypted payload, making the session appear to DPI systems as a normal email exchange. The tool supports modern TLS encryption (STARTTLS) with HMAC-SHA256 authentication, per-user secrets, IP whitelisting, and multiplexed connections over a single tunnel. ...
    Downloads: 1 This Week
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  • 17
    MJML 4

    MJML 4

    The only framework that makes responsive-email easy

    MJML is a markup language created by Mailjet and designed to reduce the pain of coding a responsive email. Its semantic syntax makes the language easy and straightforward while its rich standard components library shortens your development time and lightens your email codebase. MJML’s open-source engine takes care of translating the MJML you wrote into responsive HTML.
    Downloads: 3 This Week
    Last Update:
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  • 18
    Cypht

    Cypht

    Lightweight Open Source webmail written in PHP and JavaScript

    All your E-mail, from all your accounts, in one place. Cypht is not your father's webmail. Unless you are one of my daughters, in which case it is your father's webmail. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader. The driving force behind Cypht development is to provide combined views for multiple accounts, but it's also a standard E-mail client that lets you browse and manage IMAP...
    Downloads: 3 This Week
    Last Update:
    See Project
  • 19
    An extremely configurable portable GUI email and news client for Windows/Unix (including OS X) with IMAP, POP3, SMTP, and NNTP support, SSL, flexible address database, Python scripting, powerful filtering, and many other features for advanced users.
    Downloads: 2 This Week
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  • 20
    Mail-in-a-Box

    Mail-in-a-Box

    Take back control of your email with this mail server in a box

    Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server, a mail server in a box. Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Our goals are to make deploying...
    Downloads: 4 This Week
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  • 21
    Proton Web Clients

    Proton Web Clients

    Monorepo hosting the proton web clients

    Proton Web Clients is a monorepo hosting the web applications for Proton’s suite of privacy-focused services, including the core Proton Mail webmail interface and related web apps like Proton Calendar, Proton Drive, Proton Account, Proton VPN, Proton Pass, and other connected tools. It consolidates all web client code, shared modules, dependencies, and development tooling into a single repository, enabling unified maintenance, consistency of design patterns, and efficient evolution of Proton’s online interfaces. These web clients run entirely in the browser, letting users securely interact with their email, calendars, files, and other services without needing native software installed, and benefiting from end-to-end encryption where applicable. ...
    Downloads: 1 This Week
    Last Update:
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  • 22
    Proton Mail for iOS

    Proton Mail for iOS

    Secure email that protects your privacy

    Proton Mail for iOS is the official iPhone and iPad client that brings Proton’s secure, end-to-end encrypted email service to Apple’s mobile ecosystem, combining strong privacy protections with native performance and gestures. The app allows users to sign in to one or multiple Proton Mail accounts, read and compose encrypted messages, schedule emails, protect emails with passwords, set expiration timers, and organize mail with labels and folders inside a smooth, intuitive iOS interface. ...
    Downloads: 0 This Week
    Last Update:
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  • 23
    WireGuard Install

    WireGuard Install

    WireGuard VPN installer for Linux servers

    ...WireGuard is a modern VPN protocol known for its speed, security, and simplicity, but configuring it manually can be tedious. This project provides an interactive shell script that walks users through installation, configuration, and client management in just a few steps. It supports multiple clients, generates configuration files, and allows for easy addition or removal of peers. The script is lightweight, portable, and designed to run on popular Linux distributions without requiring advanced system knowledge. By automating the setup process, wireguard-install enables anyone to deploy a secure VPN quickly for personal, organizational, or experimental use cases. ...
    Downloads: 27 This Week
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  • 24
    Session for Android

    Session for Android

    A Decentralized, Onion Routed, Private Messenger

    Session Android is the official mobile client for Session, a privacy-first messaging protocol that enables secure, anonymous messaging without requiring phone numbers, email addresses, or centralized user accounts. Built natively for Android, the app lets users send and receive end-to-end encrypted text messages, voice notes, images, and attachments in both one-on-one and group chats, all while routing data through a decentralized onion-routing network designed to protect not just message content but also metadata like sender ID, timing, and network location. ...
    Downloads: 12 This Week
    Last Update:
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  • 25
    Neutralinojs

    Neutralinojs

    Portable and lightweight cross-platform desktop application

    ...Embedded Chromium and Node.js make simple apps bloaty, in most scenarios, framework weights more than your app source. Neutralinojs offers a lightweight and portable SDK which is an alternative for Electron and NW.js. Neutralinojs doesn't bundle Chromium and uses the existing web browser library in the operating system (Eg: gtk-webkit2 on Linux). Neutralinojs implements a secure WebSocket connection for native operations and embeds a static web server to serve the web content. Also, it offers a built-in JavaScript client library for developers.
    Downloads: 5 This Week
    Last Update:
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