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 Linux on CPU Intel Core i3 3GHz.

CudaText is built using Lazarus IDE the Delphi compatible cross-platform IDE for RAD (Rapid Application Development).


  • Fast startup time
  • Syntax highlight for a lot of languages (270+ lexers).
  • Plugins: Extensible by Python
  • Code tree: structure of functions/classes/etc, if lexer allows it.
  • Code folding.
  • Multi-carets and multi-selections.
  • Find/Replace with regular expressions.
  • 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.
  • Support for many encodings.
  • Customizable hotkeys.
  • Binary/Hex viewer for files of unlimited size (can show 10 Gb logs).
  • Correctly saves binary files.
  • Comments manager
  • Tabbed user-interface
  • Advanced search options

Web Development features (HTML/ CSS)

  • Smart auto-completion for HTML, CSS.
  • Image viewer
  • 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 extended as plugins

  • Add-ons 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
  • and more...


CudaText is written and released under the MPL-2.0 (Mozilla Public License 2.0) License.