Vim

Vim is one of the most powerful text editors with complete freedom of customization and automation, and the extensions and add-ons it creates. Vim's user interface can run in plain text (console) mode.

Features:

• working with many files at once. Dividing of editing windows can be done horizontally and vertically many times;
• unicode support;
• visual mode support that allows, for example, to perform operations on blocks of text;
• unlimited depth of undo and redo actions;
• comparison mode of two files, copying changes from one file to another;
• extensive file support (help file and more than 200 files with syntax description);
• syntax highlighting, automatic indentation value determination for each line depending on programming language (initially supports more than 200 programming languages and configuration file formats);
• integration with the operating system, offering features similar to integrated development environments, such as error search on compiler message, auto-complete identifiers, etc;
• scripting language support; ability to write extension modules - plugins;
• automatic continuation of commands, words, whole strings and file names;
• automatic invocation of external commands (e.g. automatic unpacking of a file before editing);
• file recognition and conversion of different file formats;
• convenient mechanism of command history, search words, etc;
• recording and executing macros;
• ability to save settings and session;
• integration with Perl, Tcl, Python and Ruby programming languages;
• right-to-left scripting languages support (Arabic and others);
• text folding for better visibility;
• special versions of GUI available (GTK, Motif, ...);
• well configurable and customizable for user's needs;
• editing-compiling-fixing development cycle support. Automatic execution of build/compile, error detection and recognition, jump to error lines in program text.