BiglyBT

BiglyBT is a feature filled, open source, ad-free, bittorrent client.
BiglyBT is the continuation of the Vuze/Azureus open source project first created in 2003, and is being actively developed by the original coders.
We've kept all of the features you love, while dropping the ones you probably don't (such as ads and third party software).
If you are already using Azureus or Vuze then see what features and fixes you are missing. You'll have the option to copy and migrate the configuration settings, downloads, and plugins.

https://www.biglybt.com/