BitComet 2.22 – Best Free BitTorrent Client & Downloader

Fast download client offering stable torrent performance, resume support, and intelligent caching.

2026-09-04

804

5 Stars4 Stars3 Stars2 Stars1 Star (1 votes, 5.00)

Get Notified when the Software is Updated

BitComet - Free BitTorrent Client for Fast Downloading and Sharing of Large Files

BitComet is a free and powerful download manager that fully supports the BitTorrent, HTTP, and FTP protocols. It’s uniquely designed for both speed and ease of use, featuring advanced acceleration technology that can boost your download speeds by five to ten times or even more. Download your files quickly, efficiently, and reliably with BitComet.

BitComet offers a robust set of advanced features, including simultaneous downloads, customizable download queues, and selective file downloading within torrent packages. It also provides fast resume, integrated chat functionality, disk caching, granular speed limits, port mapping, proxy settings, and IP filtering, among other professional tools.

This powerful download manager also supports 52 different languages. Additionally, to ensure faster and more reliable downloads, mirror servers are automatically located when you begin downloading a file.

With BitComet, you can preview videos within minutes of starting the download. This is a crucial feature that directly addresses the challenge posed by today’s enormous video files, which often reach several Gigabytes. You can now preview a file’s contents without waiting hours for the complete download.

To prevent wasted time, especially when dealing with torrents containing fake or undesirable files, this new function allows you to preview content before fully downloading, empowering you to either continue the download or immediately remove the task and its associated files.

BitComet Features:

Long-Term Seeding. Speed up downloading and revive dead torrents
Torrent Share. Exchange torrents while downloading
Magnet URI. You can now start BitTorrent downloads without a .torrent file, using the DHT network.
Preview while Downloading. Preview of .avi, .rmvb, .wmv, and other video files is now available during the download process.
Cross-protocol downloading support added. Use HTTP, FTP, and eMule sources during BitTorrent transfers.
Intelligent Connection Optimization. Configuration is automatically set to match your connection type.
Intelligent Disk Cache. Memory cache reduces read/write frequency, extending device life.
Intelligent Disk Allocation. Reduces disk fragmentation.
DHT network. Added support for starting BitTorrent downloads without tracker connections.
Auto Config ICF (Internet Connection Firewall) and ICS (Internet Connection Sharing) in Windows.
Auto-config UPnP port mapping in routers (UPnP support is required).
It also supports Multi-tracker, DHT, UTF-8 extension, and UDP tracker Protocol v2.

HTTP/FTP DOWNLOAD – Innovative P2P Technology

P2P downloading. BitComet automatically locates other clients and retrieves data from them, boosting your download speed without increasing the bandwidth usage of the HTTP server.
Intelligent File Rename. Automatically chooses the best name for your download file.
Preview while Downloading. Preview of AVI, RMVB, WMV, and other video files is available during the download process.
Quick Resume. Stopped download tasks can be resumed from where they left off on HTTP and FTP servers.
Multi-Mirror Download automatically locates mirror servers for downloading. It allows you to download data from these servers simultaneously, increasing your download speed by up to 300%.
Multi-Section Download. Files are split into several sections and downloaded simultaneously to increase download speed by up to 500%.
Multi-Language Support. Multi-language web pages and encoded URLs can be correctly handled.

DOWNLOAD Management – Customization Available

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

BitComet – Pros & Cons

Pros	Cons
✓ Supports BitTorrent, HTTP, and FTP downloads with cross-protocol support for additional transfer sources.	✗ The large number of advanced network and BitTorrent settings may be overwhelming for users who only need basic downloading.
✓ Offers selective file downloading, customizable queues, and per-task or global upload and download speed limits.	✗ Some performance-oriented features depend on available peers, trackers, mirror servers, or network conditions, so speed gains can vary.
✓ Includes long-term seeding, DHT, magnet links, and multi-tracker support for flexible torrent transfers.	✗ Automatic UPnP port mapping requires a router that supports UPnP, limiting this feature on some networks.
✓ Can preview supported video files while they are still downloading, helping users verify content before completing large transfers.	✗ The feature set is heavily focused on peer-to-peer transfers, which may be more extensive than necessary for users who primarily download through conventional HTTP or FTP links.
✓ Provides advanced network and disk optimizations, including intelligent caching, automatic port mapping, and connection configuration.	✗ Its broad support for advanced DHT, uTP, tracker, and connection controls can require additional configuration when troubleshooting network or transfer behavior.

Frequently Asked Questions

Why is BitComet download speed slow?

Slow speeds can be caused by a blocked listening port, limited peers or seeders, or network conditions. A green connection status indicates that the listening port is open and can allow other peers to connect, which can improve transfer performance.

Does BitComet support magnet links?

Yes. You can open a magnet link directly in the client without first downloading a separate .torrent file. It can also open torrent files from a local location, URL, or info-hash.

Can BitComet resume an interrupted download?

Yes. Download tasks can be resumed after being stopped, allowing you to continue transferring the remaining data rather than starting over. It also supports fast resume for HTTP and FTP downloads.

Is BitComet better than qBittorrent?

It depends on what you need. BitComet supports BitTorrent alongside HTTP and FTP downloads and includes features such as long-term seeding and video preview, while qBittorrent focuses primarily on BitTorrent with a clean interface and integrated search capabilities.

What’s New in BitComet 2.21:

Release Date 2026-06-23

GUI Improved: Added advanced setting options: bittorrent.transfer_thread_pool, using worker threads for BT transmission encryption and decryption operations, disabled by default
GUI Improved: Added advanced setting options: bittorrent. advertising. external. utp-port, which notifies the external uTP port through PEX in NAT1 environment, defaults to true
GUI Improved: Added advanced setting options: dht.outbound_pps_imit, dht.outbound_pending_request_limit, dht.passive_reply_pps_limit, dht.passive_reply_pending_limit
GUI Improved: Removed advanced setting option: dht.udc_send_queue_threshold
GUI Improved: Added advanced settings option: network.udp_socket_buffer_size_mb, default to 8MB
GUI Improved: The default value of the advanced settings option network.max_connecting_connections_per_tracker changed to 0 (automatic)
GUI Improved: Added categories of “BT transmission thread”, “DHT thread”, and “uTP thread” to the CPU usage statistics in the traffic graph
GUI Improved: Added uTP Port column to the peer list of BT task, hidden by default
GUI Improved: The Add Peer dialog box in peer list of BT Task supports # and // inline comments
GUI Improved: Improved the window dark mode switching mechanism
GUI Improved: Added options in Remote Access Page: Local client bypass authentication, IP whitelist clients bypass authentication
GUI Improved: Added command-line parameter –profile, which can specify the program configuration file directory for independent testing
GUI Improved: The number of HTTP Tracker connections in the statistics page is divided into two categories: pending and half-open
GUI Improved: Add DHT packet status information to the UDP transmission status in the statistics page
GUI Improved: Added uTP external port monitoring information to the statistics page
GUI Improved: In expert mode, add the local external IP: uTP-port obtained through PEX as a separate line to the peer list for diagnosis, but do not initiate a connection to oneself
GUI Improved: When creating torrent files, prioritize using the DHT nodes filled in by the user, and later use the current active DHT nodes
GUI Bugfix: After reconnecting to the remote desktop, the display position of the traffic map panel toolbar is misaligned
GUI Bugfix: LSD countdown in tracker list is inaccurate when the number of tasks is large
GUI Bugfix: In expert mode, the Infohash display in the value list of DHT network is incorrect
GUI Bugfix: RSS auto downloader does not use the default download directory for task tags when using RSS feed titles as task tags
Core Improved: Optimize the code for BT transmission encryption and decryption operations in worker threads, reducing CPU usage
Core Improved: Optimize the scheduling algorithm for initiating TCP connections, improve the processing speed of transferring pending queues to half-open queues, and balance the handling of different connection types
Core Improved: Optimize the dynamic adjustment algorithm for the MTU of uTP packets at the sender end
Core Improved: Optimize uTP LEDBAT congestion control algorithm, reduce CPU usage, and improve upload speed
Core Improved: When the BT task is connected to uTP, if there is no real interaction within 10 seconds after the complete metadata is sent, it will be disconnected
Core Improved: The maximum interval for tracker announcements has been changed to 180 minutes, with jitter of ±3 minutes
Core Improved: UDP tracker improves Connection ID timeout update and error handling
Core Improved: Improve the IP filter disconnection handling of BT protocol and long-term seeding protocol for TCP and UDP connections
Core Improved: Optimize DHT packet sending control to reduce the impact of high peak UDP packet rates and session counts on network devices
Core Improved: BT Handshake Extension Protocol adds yourport field, which returns the observed external uTP port of the other party when receiving an incoming uTP connection
Core Improved: After manually performing NAT type detection, record the detected external UDP ports for future use
Core Improved: When replying to DHT announce_peer messages, refer to the BEP42 format and return the request source IP: port observed by this node in the top-level IP field
Core Improved: When receiving DHT responses, process the locally visible UDP endpoint returned by the other party through the BEP42 IP field; Multiple DHT nodes need to cross-confirm before acceptance, reducing the risk of a single malicious or erroneous node contaminating external uTP ports
Core Improved: When announcing one’s external uTP port through PEX, data sources from BitComet extended handshake Yourport, PEX backhaul, and trusted DHT BEP42 backhaul can be used
Core Improved: When DHT replies to get_piers, attach nodes
Core Improved: When DHT receives a reply from get_piers, it ignores the node distance and performs an additional extended query on the attached nodes
Core Improved: When DHT uses domain nodes for bootstrap, it immediately adds the node to the list after resolving the domain name, and then waits for the node to reply
Core Bugfix: When BT task disk cache reaches its limit and uploads to multiple peers, the disk read speed is much faster than the upload speed
Core Bugfix: When the number of TCP initiated connections is too high, there is packet loss on the TCP port
Core Bugfix: HTTP Tracker avoids repeatedly initiating connections when they are pending
Core Bugfix: Optimize DHT packet control and eliminate the delay of the first announcement when tasks start
Core Bugfix: After UDP Tracker Domain DNS resolution, sends request only to the first record when there are multiple records
Core Bugfix: DHT Tracker lacks the get_peers step when manually announcing
Core Bugfix: DHT should not send announcements to nodes that have not received tokens
WebUI: Optimizing pagination loading of task lists and file lists
WebUI: CPU usage statistics in traffic graph add categories of “BT transmission thread”, “DHT thread”, and “uTP thread”
WebUI: Add Options in Remote Access Page: Local client bypass authentication, whitelist clients bypass authentication
WebUI: Fixed the issue where information cannot be copied to the system clipboard when accessing pages via HTTP+IP
WebUI: Add the “Copy Download Link” command to the right-click menu of the file list
WebUI: Add a uTP Port column to the peer list of the BT task, hidden by default