Since SublimeClang stopped its development, there hasn’t been any comprehensive semantic auto-completion plugin for Clang.
Recently, YouCompleteMe, the popular completion system in Vim announced its standalone server component, which allows other text editors to use it in a client-server way. See the following pages for details:
val.markovic.io/articles/youcomp … s-a-server
github.com/Valloric/ycmd
YouCompleteMe’s auto-completion for Clang is very fast and comprehensive, and nothing outside IDE world beats it. Further, it also supports GotoDefinition and error message. It supports Python and C#, although for Python we already have anaconda.
Anyone interested in developing a plugin for working with ycmd? That’s something I desperately want.