For those who had developed applications with D,
- which libraries did you use to build your application?
- those libraries were good documented?
- did you use Tango?
- do you feel that D is ready to build big applications?
- which IDE did you use? Descent maybe?
I used tango libraries + dfl and a bit of my own. Tango documentation is excellent. DFL not bad. Yes I did use tango then but tried phobos at first. Ready for big apps? depends on what you mean. In production use I have only used it for frontends and updaters. So far I've only used vim to code and entice to design gui because I couldn't find the right ide for me.
Code blocks seems to support D.
Note that any C library can be used with D, as D fully supports the C ABI. D has some limited support for C++ libraries, though not C++ template libraries.