When comparing SciTE vs UltraEdit, the Slant community recommends SciTE for most people. In the question“What are the best programming text editors?” SciTE is ranked 17th while UltraEdit is ranked 26th. The most important reason people chose SciTE is:
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.
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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.
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.
Pro Built-in shell
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.
Pro Powerful syntax highlighting for numerous languages
Lexers providing folding and syntax highlighting are based on code, not on regular expressions. They support context, nesting, special rules, etc.
Pro Free (except on Mac) and open source
SciTE is written in C++, with lot of contributors, both to the core and to the numerous lexers.
Has a simple graphical user interface
Pro Handles large files (>1GB) extremely well
UltraEdit has small memory usage and allows for fast parsing/searching when handling large files.
Pro Nice hex display & edit
There's a handful of other features like this that make UltraEdit indispensable.
Pro Works perfectly with remote files
Supports several protocols for accessing remote files and working on them with the same ease as local files. Files can be integrated in the projects as normal files.
Pro Fast, stable, easy to use
Pro Extremely customizable GUI editor
UltraEdit offer the best of both worlds. it has a full on GUI along with all the shortcut commands you need. There's no need for the user to suffer 80 char limitations of a terminal editor.
Pro Highly flexible
UltraEdit allows you to handle groups of files as a project
Pro Probably the most versatile general editor in existence.
If you need a general editor, UltraEdit is the way to go. If you were writing C/C++ all day, then this would be your editor. If you need to slog through large files then this is your go to editor. If you need to go through XML files, then this is your editor. If you need to sort data, then this your my editor.
Con Hard to config
The configuration is mainly a file-based config, which can be unintuitive and difficult to use for new users.
Con Missing file browser
SciTE's greatest weakness is perhaps the file browser. It does not really have one, just a poor substitute which works a little bit like a terminal window with
dir commands to show the files in a directory.
No extensions, Themes.
It's not free and a license costs $79.99.
Con The themes introduced in version 20 regressed certain aspects of syntax coloring
The themes simplified the syntax highlighting which lost the capacity to have as many colors as one wanted to define. Now it is limited to around 20 different colors. In general it's not a problem but in certain cases it broke coloring.
For some reason, the classic theme is the only one that is totally pleasant for readability well with syntax highlighting.