I wanted to point out the road taken by Apple that I don't share. That is, the absolute paucity of apps on the Mac App Store, especially professional applications, but generally the littleness of applications compared to iOS, and Moreover many outdated applications for years!!! That's very bad. The road is marked for unsigned software, ok. they're doing it step by step....ma not so much.. ... in the next release macOS 10.13 i am convinced that WILL ELIMINATE the the possibility to download and install unsigned software,ok. Apple, Microsoft ... etc ... This is the next step, it closed vision! But in the same time , soon, I hope soon in a revolution of MacAPPStore, otherwise it would be a mess! Apple Have to agree soon with various software companies, and put on the mac App Store professional apps such as: Office, Adobe suite, Maya, Modo, Rhino ... ... ... et cetera, et cetera, just so it makes sense the store having a single download center and upgrade. Do not go on a thousand different sites, and eliminating for sure (in macOS 10.13) can install unsigned software. OK, but put thousands of apps and always up to date on MacAppStore, same to iOS !!!! please!!! It takes a revolution, I want to send this signal of change because as it is now the situation is very bad.