When comparing dot big bang vs Paint3D, the Slant community recommends Paint3D for most people. In the question“What are the best voxel editors?” Paint3D is ranked 4th while dot big bang is ranked 21st. The most important reason people chose Paint3D is:
Has a free trial version and a cheap full version.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and without an install
You don't need to install a massive program - you can use it in your browser.
Pro Cross-play on any device with a browser
People can be on a phone, Chromebook, tablet, Windows PC, Macbook, etc, and still, work together in real-time.
Pro Multiple people can edit at once
You can build with your friends and see what they are doing in live time.
Pro Affordable
Has a free trial version and a cheap full version.
Pro Scripting support
Can be used to generate models, import stuff, animate, etc.
Pro Can export traditional 3D models
Pro Interoperates with 2D paint programs
Pro Supports multiple voxel formats
Pro Easy to use
Pro Uses 32-bit color with real volumetric transparency
Pro Supports both "per voxel" drawing and smooth "sculpting"
Cons
Con The web site's domain is no longer available
Using the WayBackMachine to get the site's contact email address, I attempted to contact the developer to find out what the story is. There has been no response. The WayBackMachine's last archive date for the site was 11Jan2016. Their cached version of the paint3D.net's forum does not have any post explaining what happened.