I recently did a small research to evaluate the different tools facilitating the conversion of a micro-publication to a digital format easily readable on a tablet. Since I haven't found an up-to-date article offering a simple list of these tools, I thought this might be helpful for others.
Most paid solutions are structured as "software as service" encompassing the whole digital distribution process. This means publishers either have to pay for each new edition or even, in most offers, have to pay a monthly fee to maintain the distribution active. This may seem irrelevant to larger editors and publishers, but is quite inconvenient for homebrew magazines.