When comparing Slap vs EmEditor, the Slant community recommends Slap for most people. In the question“What are the best programming text editors?” Slap is ranked 47th while EmEditor is ranked 72nd. The most important reason people chose Slap is:
Slap supports mouse keybindings even though it works inside the terminal and also through SSH.
Specs
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Pros
Pro First-class mouse support
Slap supports mouse keybindings even though it works inside the terminal and also through SSH.
Pro Uses desktop-like keybindings
Slap features configurable keybindings (Ctrl+S, Ctrl+Z, etc).
Pro Great terminal interface
Pro Excellent file compare functionality
Comparing files is intuitive and works well.
Pro Very good at handling (large) CSV files
Quickly opens even very large CSVs and converts data to columns according to delimiter. Fast Search/Replace operations.
Pro Opens very large files very fast
Cons
Con Requires node.js
Slap is written in JavaScript and it requires something to interpret it in a local machine. That something is node.js, but for people who don't need node, it would be a hindrance and an overkill to install node just to use a simple text editor. Furthermore, it can only be used remotely if the remote machine has node installed.
Con CLI only
Slap only runs through the terminal.
Con Windows-only
Con Default themes and syntax coloring not the prettiest
Some syntax highlighting colors and/or themes don't look very good - but can be customised.