SciTE vs Crimson Editor

It's property files allow for fine tweaks of its behavior, at a global or per language / project level. These textual settings might be confusing for those used to preference dialogs, but prove to be powerful, flexible, and fine grained.

With less than 2 MB of binary on Windows, SciTE starts instantly. Plus, if you don't need all the config, syntax files, blah, there's a 678k standalone .exe version. Nothing is going to beat that for lightweight and start-up times. Stick it in a folder that is already on your PATH.

Based on the Scintilla source code editor, SciTE has some advanced features like rectangular editing, simple regular expression search and replace, code folding, etc. It allows the user to launch a compiler or interpreter, and it can also interpret the error messages, jumping at the location they point to.

Lua scripting is key to SciTE's power and flexibility. The Lua scripting language can be used to perform complex text transformations. It's relatively simple syntax and its large user-base makes it a great choice for a scripting feature.

The console window can show the result of ran commands (like build current file, reporting warnings, and errors), but also accept interactive shell commands.

SciTE works on Windows and Linux, and it also has a commercial port on MacOS.

Lexers providing folding and syntax highlighting are based on code, not on regular expressions. They support context, nesting, special rules, etc.

SciTE is written in C++, with lot of contributors, both to the core and to the numerous lexers.

Has a simple graphical user interface

It can create a project that will be stored in a prj file, which is a text file that can be edited and used across systems. The folder pane navigation is limited to each disk drive. The output pane can be used to capture compilers or other exe's output, and also shows search output while searching in multiple files. You can just click on any line and it then opens the corresponding file in a new tab and shows you the needed line.

Can open with all last worked documents - remembers all file positions.

Find and replace (multifile) allowed with support for regular expressions also.

Repetitive lines or words can be recorded as a macro, kept and recalled when needed, since it is permanently stored (up to 11 macros).

Return to last edit option is very good during coding, where we can lose track of where we were.

The column mode editing trick, which we could do in MS Office (with ALT + mouse key), is also available.

Supports any number of tabs