BiglyBT is a feature filled, open source, bittorrent client based on the Azureus open source project, now https://alternativeto.net/software/vuze/ .

Features:
    Swarm merging across torrents that share the common files. BiglyBT detects similar files in multiple torrents automatically, and merges swarms to download files faster and, if possible, fix incomplete torrents.
    Rate limiting to limit rates globally, by download, by tag, peer-set (e.g. peers from a country, by network, and by individual peer.
    Web Torrent support.
    Remote control support through an Android application.
    Tagging and the creation of categories.
    RSS feed subscriptions.
    View ratings and comments before adding torrents to the torrent client.
    Decentralized public and anonymous chat.
    VPN detection for better integration of virtual private networks.
    I2P Support.
    Tor support to proxy search results, subscriptions and browser connections.
    Media playback.
    Media conversion.
    UPnP Media Server and DLNA support.

BiglyBT

Windows

Linux

Android

<p>BiglyBT is a feature filled, open source, bittorrent client based on the Azureus open source project, now <a href='//alternativeto.net/software/vuze/'><img alt='Small Vuze icon' class='mini-app-icon' src='//d2.alternativeto.net/dist/icons/vuze_79899.png?width=36&height=36&mode=crop&upscale=false' />Vuze</a> .Features:</p>

desktop

mobile

tablet

browser

console

wearable

indie

custom

Online

iPhone

iPad

Android Tablet

Self-Hosted

Software as a Service (SaaS)

Chrome OS

Windows Phone

Google Chrome

Firefox

Steam

Kindle Fire

Blackberry

Windows Mobile

Windows S

Wordpress

Apple Watch

PortableApps.com

Magento Community Edition

Apple TV

Opera

Xbox

Playstation

Android Wear

Safari

Java Mobile

Symbian S60

JavaScript

Wine

Blackberry 10

Xfce

Python

Node.JS

Facebook

Java

Haiku

HP webOS

Slack

.NET Framework

Raspberry Pi

Microsoft Office Outlook

Shopify

Internet Explorer

Apps with 'Swarm Merging' feature

BiglyBT