Transmission 4.0.1

Transmission

Transmission is a fast, easy-to-use bittorrent client with support for encryption, a web interface, peer exchange, magnet links, DHT, µTP, UPnP and NAT-PMP port forwarding, webseed support, watch directories, tracker editing, global and per-torrent speed limits, and more.

Transmission has one of the lowest memory & resource footprints of any major BitTorrent client. Transmission's light overhead is one reason why it is so well suited for home NAS and media servers. Having been used by Western Digital, Zyxel and Belkin, Transmission gives truly impressive performance on almost any compatible hardware.

Transmission is an open source, volunteer-based project. Unlike some BitTorrent clients, Transmission doesn't play games with its users to make money.

Transmission doesn't bundle toolbars, pop-up ads, flash ads, twitter tools, or anything else.
It doesn't hold some features back for a payware version.
Its source code is available for anyone to review.
Transmission doesn't track users, the website and forums have no third-party ads or analytics.

Transmission 4.0.1 changelog:

Highlights

Added Qt 5 builds for older Windows systems, since Qt 6 requires Windows 10 or newer.
Fixed 4.0.0 bug that caused some torrents to have poor speed and some of their checksums to be incorrectly marked as failed. (#4879, #4880, #4890)
Fixed 4.0.0 bug that caused beachballing / jank. (#4936)
Fixed 4.0.0 bug that caused blocklists to use more memory than necessary. (#4953)
Fixed 4.0.0 issue that failed to migrate magnet links from Transmission 3. (#4840)

libtransmission (All Platforms)

Follow BEP 27's placement of private field when creating new torrents. (#4809)
Fixed 4.0.0 bug that failed to retry to connect to peers with TCP if UTP failed first. (#4897)
Fixed 4.0.0 bug that could prevent port forwarding settings from being saved. (#4842)
Fixed 4.0.0 crash that occurred when removing a webseed torrent while downloading. (#4847)
Fixed 4.0.0 regression that paused magnet links when adding them. (#4856)
Fixed 4.0.0 illegal instruction exception on some x86 Windows machines. (#4886)
Fixed 4.0.0 build failure due to incompatible system and bundled libutp headers. (#4877)
Fixed 4.0.0 build failure on NetBSD. (#4863)
Fixed 4.0.0 build error when building bundled libb64 and libutp. (#4762, #4810)
Fixed 4.0.0 build failure when compiling with Clang on Windows. (#4978)
Fixed 4.0.0 build issue that prevented distro versions of libdeflate from being used. (#4968)
Removed a harmless "unable to read resume file" error message to avoid confusion. (#4799)
Fixed 4.0.0 libtransmission compiler warnings. (#4805)

macOS Client

Added padding to widgets in macOS client to avoid being hidden below scroller. (#4788)
Fixed 4.0.0 layout issue in the pieces view. (#4884)
Fixed 4.0.0 bug that didn't highlight the current selection in View > Use Groups. (#4896)
Fixed dock icon badge colors to Apple accessibility guidelines. (#4813)

Qt Client

Fixed incorrect display of some trackers' announce URLs. (#4846)
Fixed "Open Folder" feature for local sessions. (#4963)
Fixed Qt 6 deprecation warnings. (#4710)

GTK Client

Fixed 4.0.0 crash on opening torrent details dialog. (#4859)
Fixed 4.0.0 bug that froze the app after showing or hiding via system tray (GTK 3 only). (#4939)
Fixed 4.0.0 rounding error in the progressbar's percentage display. (#4933)
Fixed 4.0.0 blurred progress bars in main window. (#4756)
Fixed awkward grammar in the Details Dialog's running-time row. (#4898)

Web Client