Note: the text part is just for positioning reference, used just plain Vera Sans font but think the font part needs some care.
Variations of the above one and other possible uses:
A shortened "making of" and some draft versions:
Link to the post on the tanglu-devel mailing list with more description about the logo.
Download the above images in editable SVG format:
Tanglu logo proposal by Ink Apnea is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.