When comparing CodeBlocks vs Gnome Builder, the Slant community recommends CodeBlocks for most people. In the question“What are the best IDEs for C++ on Linux?” CodeBlocks is ranked 9th while Gnome Builder is ranked 14th.
Ranked in these QuestionsQuestion Ranking
Pro Easy to use
Pro Great language support (for linux based projects)
Pro Integrates nicely into the GNOME Desktop Environment
Client-side decorations, good use of widgets.
Pro Terminal built in
Fully featured terminal is packaged.
Pro Integrated debugging
Pro Extendable through plugins
Pro Lovely find and replace tool with great REGEX support
Shows a live feedback of what matches the pattern/criteria entered.
Pro Supports versioning (git)
Shows diff indication and has branch integration too.
Pro Tiling Editor capability
Pro Integrated system-wide profiler for improving software performance
Good templates available to build applications, even to build gnome applications.
Con Lots of functionality is encountered only in plugins
You can't change keyboard shortcuts, neither share themes with vanilla codeblocks, for example.
Con Slow navigation using mouse
In most IDE's, you can "goto declaration"/"implementation" by holding CTRL and left-clicking on an identifier or include directory. This does not work in Code::Blocks no matter what settings you have. Right-clicking will bring-up a menu that includes these "goto" options, but it's not instant and you'll be slowed down immensely depending on how often you have to do it.
Con Not very feature rich
By default it's not much more than "What if Gedit had a compiler and a terminal built in?" (or: "What if Notepad had colour coding, auto indents, file structure, a compiler and a terminal built in?")
There are far more professional IDEs out there. This one is much too basic for any efficient use.
Con No project management
Because it is still in early development there are little project management functionalities.