It seems I cannot stop work-related topics from seeping into this personal blog... Here are two more work books I like whose authors have generously posted the full text online:
Eric von Hippel's Democratizing Innovation.
Yochai Benkler's The Wealth of Networks.
And Cory "every author should put their books online for free because I make a good living even though my books are available for free online, but never mention that said good living is from giving talks, not selling books" Doctorow put his new novel Makers online as well. Haven't read it yet, but his earlier works were ok and this one seems to have engineering as the hero, so I'll give it a read when I have free time, around 2020 or so.