Both Gobuntu and gNewSense fulfill the desires of the most exigent users when it is about respecting their freedoms. Almost identical at the software level, these two distributions differ in the relation they maintain with Ubuntu at the project level.
Gobuntu is a newcomer in the *buntu family. It aims at satisfying Free Software lovers, who, like me, refuse any piece of proprietary blob to run on their machine. This GNU/Linux distribution looks very similar to gNewSense. At the software level, minor differences are present like the substitution of Firefox by Iceweasel in gNewSense (Gobuntu developers plan to do the same in their next release). The real differences lie at the project level, in the relation these two projects maintain with Ubuntu. In particular, Gobuntu differs from gNewSense in: