Transmission is free software. All its code is freely available online and is licensed under either the GNU Public License v2 or the MIT License.
Changelog
Version 0.2 (11-01-2009)
* Correcting a bug in the event report.
* Adding fields in the WebUI to change the mode.
* Adding a mode to report (downloaded*2) as what you uploaded
Version 0.1 [...]

For Those of you who crave a native Linux mod.
Based on Transmission 1.52.
Changelog v0.13
-Minor cosmetic update
-Updated to Transmission 1.52
For Instructions on How to Compile, follow official Transmission guide (235 hits).
For NSLU2(Oleg, DD-WRT) Optware users:
- Install transmission from ipkg
- Extract opt from rar to /opt on HDD. Overwrite all files.
Note: I didn’t upload .ipk package file [...]