Top Alternatives to Calypso

Tor (The Onion Router) is a free and open-source software that enables anonymous communication. It directs internet traffic through a free, worldwide volunteer overlay network, consisting of thousands of relays, to conceal a user's location and usage from anyone conducting network surveillance or traffic analysis.

Transmission is a free and open-source BitTorrent client known for its simplicity, speed, and low resource usage. Designed to be lightweight and unobtrusive, it provides a straightforward interface for downloading and managing torrents efficiently across various operating systems.

Deluge is a free, open-source BitTorrent client offering a lightweight and cross-platform solution for downloading and sharing files. Known for its extensibility through plugins, it provides users with a customizable and efficient torrenting experience.

OpenVPN is a robust, open-source software solution for creating secure Virtual Private Networks (VPNs). It utilizes SSL/TLS for encryption and authentication, offering a flexible and highly configurable platform for various networking needs, from site-to-site connections to individual user access.

Vuze, formerly known as Azureus, is a feature-rich BitTorrent client designed for downloading, managing, and consuming digital content. It provides robust tools for discovering, downloading, and sharing torrents, alongside integrated functionalities for video playback and conversion.

ZenMate VPN for Chrome is a browser extension designed to enhance online security, privacy, and freedom. It encrypts your internet traffic, hides your IP address, and allows access to geo-restricted content with ease.

CyberGhost VPN is a leading VPN provider offering a secure and private online experience. With strong encryption, a vast server network, and a strict no-logs policy, it allows users to surf anonymously, unblock content, and protect their digital identity across multiple devices and platforms.

Tor Browser is a modified version of Firefox designed for anonymous web browsing. It routes your internet traffic through the Tor network, making it significantly harder to track your online activity and location. Ideal for users who prioritize privacy and wish to bypass censorship.

Tixati is a robust and feature-rich BitTorrent client designed for efficient peer-to-peer file sharing. It stands out for its lightweight design, absence of advertisements, advanced bandwidth control, and detailed statistics, offering a highly customizable experience for both novice and experienced users.

eMule is a veteran free peer-to-peer file sharing client for Windows, connecting to both the eDonkey and Kad networks for robust file transfers worldwide.

I2P (The Invisible Internet Project) is a secure, anonymous overlay network layer designed for privacy-preserving communication and application hosting. It enables users to browse anonymously, host websites (.i2p 'eepsites'), chat, and transfer files without revealing their identity or location.

BitTorrent is a widely-used peer-to-peer communication protocol and accompanying software client for efficient distribution of data and electronic files across the internet. It enables users to download and share files in a decentralized manner, leveraging the collective bandwidth of participants rather than relying on a single server.

Freenet is a robust, decentralized peer-to-peer platform designed to provide uncensored communication and information sharing. It leverages a distributed data store and a suite of free software applications to enable users to publish and access content anonymously, bypassing censorship and surveillance.

UltraSurf is a freeware tool designed to help users bypass internet censorship and access blocked websites. It routes traffic through its own network of proxy servers, providing a degree of anonymity and enabling users to circumvent geographical restrictions and firewalls.

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.

VyprVPN is a secure and private VPN service, offering robust encryption, advanced protocols like WireGuard, and features for bypassing censorship and protecting online anonymity. It's ideal for users prioritizing privacy and security.

rTorrent is a powerful and resource-efficient command-line BitTorrent client for Unix-like systems. Built on the advanced libTorrent library, it offers high performance and extensive configurability, making it ideal for users seeking control and automation.

Freegate is a robust anti-censorship software designed to bypass internet firewalls and access blocked websites securely and anonymously. Developed by Dynamic Internet Technology (DIT), it utilizes dynamic encryption and a network of proxy servers to provide uncensored internet access primarily to users in regions with strict internet controls.

PureVPN offers a secure and fast VPN solution for enhanced online privacy and security. It provides strong encryption, anonymous browsing, and access to geo-restricted content.

VPN Unlimited is a comprehensive internet security application offering robust VPN services and advanced privacy features designed to protect online activity and bypass geographical restrictions effectively. It prioritizes user anonymity and data security through strong encryption.

GNUnet is a free and open-source framework for building secure, distributed, and privacy-preserving peer-to-peer applications. It goes beyond simple file sharing, offering a foundation for various decentralized services designed to resist surveillance and censorship.

Shadowsocks is an open-source, lightweight SOCKS5 proxy designed to bypass internet censorship. It provides a secure tunnel between your device and the internet, helping users access blocked content and surf anonymously by encrypting traffic and making it appear as regular HTTPS traffic.

Halite is a discontinued BitTorrent client built upon the robust libtorrent library. It offered a straightforward and lightweight solution for downloading and sharing files via the BitTorrent protocol, known for its efficiency and minimal resource usage.

Lantern is a free software application designed to bypass internet censorship and provide access to blocked websites and content.

FilePizza offers free peer-to-peer file transfers directly in your web browser. Simply select a file, and a unique link is generated for sharing, enabling recipients to download directly from your browser without needing uploads to a central server.

Windscribe is a comprehensive privacy and security tool offering a dynamic VPN service alongside powerful ad, tracker, and malware blocking. It enables users to bypass internet censorship, access geo-restricted content securely, and enhance online anonymity across multiple devices with user-friendly applications and browser extensions.

HideMyAss! Free Web Proxy offers a simple, web-based solution to anonymize your online activity by masking your real IP address. It's a free and convenient way to browse the web with a layer of privacy, especially for basic anonymous browsing tasks.

OneSwarm was a file-sharing client focused on privacy and anonymity, designed to operate within a darknet or a friend-to-friend network.

SecurityKISS Tunnel is a robust VPN service designed to enhance online security and privacy. It encrypts your internet traffic and masks your IP address, allowing you to bypass censorship, access geo-restricted content, and surf the web anonymously.

SurfEasy VPN is a robust virtual private network service offering enhanced online privacy and security. It encrypts your internet connection, masks your IP address, and provides access to geo-restricted content, making your online activities anonymous and secure across various devices.

MLDonkey is a discontinued open-source, multi-protocol file-sharing application acting as a back-end server. It supported various peer-to-peer networks like eD2k, Kad, and BitTorrent, offering a flexible solution for downloading and sharing files across different platforms.

HideIP VPN is a robust Virtual Private Network service designed to enhance online security, anonymity, and privacy. It offers strong encryption, the ability to bypass censorship, and a global network of servers to protect your digital footprint.

VPN Gate is a volunteer-operated academic project offering free VPN servers worldwide, designed to bypass censorship and protect users' online privacy. It leverages the SoftEther VPN protocol and is supported by a network of public relay servers.

Mullvad is a highly privacy-focused VPN service known for its strong commitment to anonymity, accepting payments via cash and Bitcoin, and offering robust encryption protocols like WireGuard and OpenVPN. It adheres strictly to a no-logging policy.