BitComet 2.21 – Download Manager

BitComet is a BitTorrent, HTTP, FTP download management software. It is powerful, fast, very easy-to-use, and completely FREE. The advanced features allow to accelerate your downloading speed up to 5 – 10 times faster, or even more.

BitComet supports simultaneous downloads, download queue, selected downloads in torrent package, fast-resume, chatting, disk cache, speed limits, port mapping, proxy, ip-filter, etc.

Also supports 52 Languages. The app automatically finds the mirror servers for the file being downloaded.

With Bitcomet you can preview the videos only minutes after downloading has begun. You don’t need to wait dozens of hours to finish the download. At present, most of the video files on the Internet have huge sizes, some files going even as big as several Gigabytes.

And there are some torrents containing fake files which may waste lots of your time to download. With this new function, you can check the content by previewing files and deciding whether to continue the download or remove the task and its files from your computer.

BitComet features:

• Long-Term Seeding. Speed up downloading and revive dead torrents
• Torrent Share. Exchange torrent while downloading
• Magnet URI. Start BitTorrent download without .torrent file any more, using DHT network.
• Preview while Downloading. Preview of .avi .rmvb .wmv and other video files is available during downloading process.
• Cross Protocol Downloading: Benefit from HTTP/FTP/eMule download sources while BitTorrent downloading.
• Intelligent Connection Optimization. Configuration is automatically set to match your connection type.
• Intelligent Disk Cache. Memory cache reduces the read/write frequency of your hard drive, increasing device life.
• Intelligent Disk Allocation. Reduce disk fragmentation.
• DHT network. Start BitTorrent download without connecting to any tracker.
• Auto Config ICF (Internet Connection Firewall) and ICS (Internet Connection Sharing) in Windows.
• Auto Config UPNP port mapping in router (the router must support UPnP).
• Also support Multi-tracker, DHT, UTF-8 extension, and UDP tracker Protocol v2.

HTTP/FTP Download – Innovative P2P Technology

• P2P downloading. BitComet automatically finds other clients and gets data from them to increase your download speed，without additional bandwidth usage of the HTTP server.
• Intelligent File Rename. Automatic choose the best name for your download file.
• Preview while Downloading. Preview of avi, rmvb, wmv and other video files is available during downloading process.
• Quick Resume. You can resume the stopped download tasks from where they left off from both HTTP and FTP servers.
• Multi-Mirror download. Automatically finds mirror servers for the downloading file. Downloads data from these servers at the same time and increases download speed 300% or more.
• Multi-Section download. Files are split into several sections which are downloaded at the same time to increase the download speed up to 500% or more.
• Multi-Language Support.

Download Management – Customization Available

• Global and Per-Task Speed Limit, for Both Upload and Download.
• Bandwidth Scheduler
• Custom-built Categories Management.

Changes in BitComet 2.20 (2026-01-19):

• GUI Improved: Add a filter input box to the file list page
• GUI Improved: Add a filter input box to the file list in the BT task properties dialog
• GUI Improved: After enabling the “Create subdirectory for torrents with only a single file” option in the BT task, the task name in the task list is also displayed using “subdirectory name”
• GUI Improved: Add advanced settings options: ui.copy_magnet_with_base32_infohash
• GUI Improved: Add advanced settings options: bittorrent.http_tracker
• GUI Improved: Add advanced settings options: network.rss_http_visit_interval, 100ms as default
• GUI Improved: When creating torrent files, support piece size of 128MB and 256MB
• GUI Improved: The default value for the minimum cache size in the advanced settings has been changed from 64MB to 256MB
• GUI Improved: When there are a large number of files in a BT task, the file download order list in the task properties dialog displays slowly
• Core Improved: When reducing the number of connections during HTTP task downloading, priority should be given to retaining connections with higher download speeds
• Core Bugfix: Loading fails when the size of the piece_part file exceeds 4GB
• Core Bugfix: When the header and tail pieces of video files cannot be downloaded, the sequential download request algorithm becomes ineffective
• WebUI: Add task name filtering function to the task list
• WebUI: Supports batch addition of BT download tasks with multiple lines of magnet links
• WebUI: The task list adopts paging loading to reduce network traffic
• WebUI: Add query items to the statistics page interface: G_TOTAL_DOWNLOAD_BYTE、G_TOTAL_UPLOAD_BYTE、G_SESSION_DOWNLOAD_BYTE、G_SESSION_UPLOAD_BYTE
• WebUI: Change the video file selection window to a fixed width
• WebUI: The issue of being unable to select files in the video file selection window has been fixed
• WebUI: The button list and task search box in the top menu bar automatically wrap and display according to the width of the window
• WebUI: When reloading the page, preserve the sorting status of the task list
• WebUI: Optimize the width of each column in the task list and video file list

Changes in BitComet 2.19 (2025-12-15):

• GUI Improved: Automatically triggers port detection after changing the listening port using command-line parameter ` — bt_port `
• GUI Improved: Added advanced settings option: network.check_port_interval_hour, scheduled port status check
• GUI Improved: Remove browser bookmark page from left sidebar
• GUI Improved: Improved listening port error prompt
• GUI Improved: Flow graph increases CPU logic processor usage
• GUI Improved: In expert mode, the statistics page displays timer queue information
• GUI Improved: In expert mode, add message queue and timer queue sorting commands to the right-click menu of the statistics page
• GUI Bugfix: BT task peer list addition and ban peers unable to handle peers with port number 65535
• GUI Bugfix: When the transmission speed is high, the floating window displays abnormally
• Core Improved: Appropriately increase the upload connection limit for long-term uploads to non registered users
• Core Improved: Handling cookies during HTTP task redirection
• Core Improved: Upgrade OpenSSL to v3.5.4
• Core Improved: Optimize timer queue to reduce CPU usage
• Core Improved: Optimize TCP connection queue to reduce CPU usage
• Core Improved: Optimize real-time sorting of task lists to reduce CPU usage
• Core Improved: DNS query module optimization for program exiting
• Core Bugfix: Failed to move files to the preset folder after HTTP task download is complete
• Core Bugfix: When creating a new BT task, it will overwrite the task information file of the HTTP task with the same name
• WebUI: Fix input boxes in various dialog boxes Ctrl+A Select All
• WebUI: Use pagination to load file lists, reducing network traffic
• WebUI: The file list displays file priority and can be set through the right-click menu
• WebUI: Add file name filtering function to file list
• WebUI: Optimizing page scaling processing

Homepage – https://www.bitcomet.com

Supported Operating Systems:

• Windows 7, 8, 8.1, 10, 11 (32-bit, 64-bit).
• Android 7.0 or later
• macOS

Size: 37.7 MB

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