When comparing Femto Emacs vs qemacs (for quick emacs), the Slant community recommends qemacs (for quick emacs) for most people. In the question“What are the best open-source text editors for programming?” qemacs (for quick emacs) is ranked 28th while Femto Emacs is ranked 37th. The most important reason people chose qemacs (for quick emacs) is:
Including e.g. Chinese.
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Pros
Pro Well documented
A long and well written tutorial teaches how to program in femtolisp and write extensions for Femto Emacs.
Pro Highly compatible with Emacs
If you know Emacs, you can start using Femto Emacs immediately.
Pro Very small footprint
The size of the executable file and the femtolisp library add up to only 500 k. The C source code is also small and well documented, so one can easily modify it. You can also use the source code to learn how to program a text editor.
Pro Very fast startup time
For small files, Femto Emacs starts up faster than emacs or vim.
Pro Input methods for most (human) languages
Including e.g. Chinese.
Pro Terminal and graphics mode
Supports the terminal mode with 'qemacs -nw' and a graphics mode.
Pro Good documentation and help
- Context sensitive shortcut help on F1.
- Good online documentation.
Pro Comfortable file browser
Easy to open and manage files (dired-mode).
Pro Supports many editing modes besides text
- Hex
- HTML / CSS
- Image
- Audio/video (maybe not the most sought after mode in a text editor, but, well, it's there)
Pro Full UTF-8 support
Including bi-directional writing.
Pro Super lightweight and fast
Pro Emacs like key-bindings
Use your muscle memory if you know Emacs already.
Cons
Con No syntax coloring for Latex
The distribution comes with syntax coloring examples for many languages, like Haskell, C, Lisp, Python, etc. However, there is no scheme for Latex. If you need syntax coloring for Latex, you will need to add your own color scheme.
Con Source distribution only
Femto Emacs is distributed only in source form. Therefore, you need to install ncurses, gcc and compile it with make and make install. There is no binary distribution. If you want mouse support, you need to program it in femtolisp or in C. This should not be a problem if you are a programmer, but can become an issue if you don't know Lisp or C. If you want to use femtolisp on Windows, you will need mingw and ncurses.