I said that 99design is a nest for plagiarizers, and I hoped people would research them.
I will do that task for you, now. Some designs should be disqualified from the contest:
#1 Finalist (Logo #6): Derivative work
Too similar to the Open Source logo
#2 Finalist (Logo #7): Derivative work
https://www.fotolia.com/id/102520371
https://www.fotolia.com/id/111226121
#3 Finalist (Logo #15): Derivative work
http://apple.wallpapersfine.com/iPhone6Plus/6750.html
Besides, these subtle shades with volumetric effect are gone once it is converted in monochrome.
#4 Finalist (Logo #110): Generic
Nodes and Graphs are too generic. Even Storj added some uniquely identifiable feature (a little cloud in the middle).
Having just nodes and links is the opposite of being uniquely identifiable.
#5 Finalist (Logo #235): Plagiarized.
https://www.pinterest.com/pin/542261611357181200/
What about #6 (Logo #268)?
The #6 (Logo #268) seems to be original, I haven’t seen anywhere an hexagon with a circuit in negative space forming a diagonal S. If anyone else finds evidence of plagiarism or derivative work, please post it.
If this is original work, it is quite clever.
My personal opinion is that I would ditch the “shackle” and just keep the hexagon.
So from these logos, my choice is #6. Sadly not because it is the best, but because it is the only choice available.