CudaText is a cross-platform text editor, written in Object Pascal. It is open source project and can be used free of charge, even for business. It starts quite fast: ~0.3 sec with ~30 plugins on CPU Intel Core i3. It is extensible by Python add-ons: plugins, linters, code tree parsers, external tools. Syntax parser is feature-rich, from EControl engine. Syntax highlight for lot of languages (270+ lexers). Code tree: structure of functions/classes/etc, if lexer allows it. Find/Replace with regular expressions. Support for many encodings. Correctly saves binary files. Smart auto-completion for HTML, CSS.
Features: Code folding. Multi-carets and multi-selections. Configs in JSON format. Including lexer-specific configs. Tabbed UI. Split view to primary/secondary. Split window to 2/3/4/6 groups of tabs. Command palette, with fuzzy matching. Minimap. Micromap. Show unprinted whitespace. Customizable hotkeys. Binary/Hex viewer for files of unlimited size (can show 10 Gb logs).
Features for HTML/CSS coding: HTML tags completion with Tab-key (Snippets plugin). HTML color codes (#rgb, #rrggbb) underline. Show pictures inside editor area (jpeg/png/gif/bmp/ico). Show tooltip when mouse moves over picture tag, entity, color value. Features implemented as plugins Addons manager Find in files Snippets LSP protocol support External tools Project manager Session manager Macro manager Spell checker FTP panel Highlight all occurrences Color picker Insert date/time Linters support (CudaLint) Formatters for HTML/CSS/JS/XML/... (CudaFormatter) Creating backup files Menu configurator