When comparing Kate vs GCC, the Slant community recommends Kate for most people. In the question“What are the best text editors for UNIX-like systems?” Kate is ranked 3rd while GCC is ranked 23rd. The most important reason people chose Kate is:
Has a terminal that can sync to the location of your document, letting you compile or run your program quickly or run quick commands, all without leaving the editor.
Specs
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Pros
Pro Integrated terminal
Has a terminal that can sync to the location of your document, letting you compile or run your program quickly or run quick commands, all without leaving the editor.
Pro Project mode
Kate allows you to make projects to simplify the organisation of your code. This brings in additional organization of an IDE without the overhead.
Pro Fast and minimaistic
Kate is pretty fast and lightweight. This helps it with it's start up speed.
Pro Syntax highlighting
Kate supports syntax highlighting for over 180 languages, from Assembler to Zsh.
Pro Edit over FTP, SSH, or other protocols
Kate uses KDE's input and output libraries to read and write files, allowing seamless integration with FTP, SMB, SFTP, and many other protocols.
Pro Thriving plugin ecosystem
Lots of plugins allow Kate to expand or shrink based on your needs. It includes GDB integration, XML completion, and symbol viewing to speed up programming.
Pro By far one of the best and lightest text editors.
Notepads alternative (for the Windows users).
Pro Vi entry mode
Kate has a vi entry mode.
Pro Mature
GCC was first released in 1987 when it was called the GNU C Compiler, a couple of months after it was released it was extended to support C++ too. Nowadays it supports other languages than C or C++.
Having been in use and constant development for more than 20 years it has reached a state of maturity and stability. The fact that it's so old also means that there are countless resources out there for people who want to use it.
Pro Default on many systems
GCC is the default compiler on several systems. Most of the time people have it installed on their machine without even knowing it's there.
Pro Available for even the most obscure hardware
Since it's so old and very popular it has been ported to almost any architecture imaginable. This means that it's probably compatible with even the most obscure and unheard hardware.
Pro Very stable, excellent cross-platform use
Cons
Con Hard to install on Windows or OS X
Kate can be a little hard to install and configure, especially for beginners.
On Linux or BSD, it can be easily installed from your distribution's repositories.