When comparing Gnome Builder vs Spacemacs, the Slant community recommends Gnome Builder for most people. In the question“What are the best editors/IDEs for Rust?” Gnome Builder is ranked 5th while Spacemacs is ranked 7th. The most important reason people chose Gnome Builder is:
Ranked in these QuestionsQuestion Ranking
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.
Pro Preconfigured emacs distro
Spacemacs is just a well-configured Emacs distribution with community-sourced best in class plugins and layers selected to take the setup pain out of Emacs. Evil mode gives the Vim bindings and modes for fast editing, while Helm makes everything discoverable to make learning to be more productive simple and unintrusive.
Pro VIM Keybindings with EMACS ecosystem
EMACS ecosystem and language support is best in show. The EMACS is a great IDE that was in search of a good text editor. Spacemacs makes EMACS have a good text editor.
Con No project management
Because it is still in early development there are little project management functionalities.
Con Emacs is slow
Emacs is single threaded which means that if you enable all the great features you might be used to from Vim, it will run noticeably slower which can be quite frustrating at times. There are efforts at a concurrent Emacs, but they don't seem to be going anywhere.