BiglyBT 4.1 is a free BitTorrent client for Windows, and the download comes from the official host github.com; TopDown APK does not host the file. It is open source under GPLv2 and carries no ads.
Bigly Software and the GitHub project
Bigly Software develops BiglyBT and publishes it under the GitHub account BiglySoftware. The package ID is BiglySoftware.BiglyBT, and the app is free.
The tags list BitTorrent, magnet links, I2P and FOSS, which places it among the p2p clients.
Magnets, IPv6 options and tag rules
The client handles magnet links and magnet files. Version 4.1 adds options to ignore non-global IPv6 addresses and temporary privacy addresses, and magnets can now be added in a stopped state.
Tags get more control too, including constraint functions that accept complex arguments.
Size and version details for Windows
The Windows build is 33.1 MB and was released on May 20, 2026.
What's new in 4.1
Version 4.1 adds a remaining-bytes column to the files view and an option to switch files to high priority based on percent done. It also adds column filtering to the all-trackers view.
BiglyBT pros and cons
Pros
- Free, with no ads
- Open source under GPLv2
- Downloaded from github.com
- Magnet link support and I2P tag
- Many new view and column options in 4.1
Cons
- Release notes are technical and aimed at advanced users
- Aimed at advanced users
- Release notes are technical and aimed at advanced users
Is BiglyBT safe?
The file is served from github.com, the official host, and TopDown APK does not host it. The publisher is Bigly Software and the licence is GPLv2, so the source is open to inspection. No independent security review is available.
How to install BiglyBT
- Press the download button to get the official file.
- Run the installer you saved and confirm the Windows security prompt if the publisher matches.
- Follow the setup steps, then start BiglyBT from the Start menu.
