Thanks for Fritzing. It’s great piece of software. I’m now during creation of huge bundle of custom parts components for schematics and I would like to publish my work for others. I would like to point Fritzing as a software worth to use but to download it from official website there is a necessary to make a donation. For most of the people it may be an impassable obstacle. Is this donation mandatory to Download Fritzing? If not can I suggest to create account and use option “I already paid”.