I would say that technologies that have low barrier to entry have a higher likelihood to lead to an outcome of increased justice.
If the barrier to entry is high, the productivity benefits will be leveraged more by the people who are able get over that barrier.
If you look at the question from a bird’s eyes view that seems to be the general outline. The two main barriers to entry from a general perspective seems to be either capital or knowledge.
So all else being equal a technology that doesn’t require specialized knowledge to be able to use, or require a big amount of capital to be able to leverage that technology you’ll be able to disperse the productivity benefits of that technology to a broader populace, and more people would be able to gain the benefits of it.
When it comes to the field of IT more specifically I think there will always be a certain barrier to entry because of the knowledge requirements to leverage ITs benefits. Yes, tools can be built that can be used by everyone, and in one way distributing the productivity benefits to more people. It will still be the people who have specialized knowledge which will in one way or another be gatekeepers.
Given that today’s economy is increasingly knowledge based, the one technology that could lead to increased justice would be teaching, or the transmitting of knowledge.