Apps similar to Smultron include Notepad++, which is free and open source. Other options are Visual Studio Code, Sublime Text, VSCodium and Vim. You're spoiled for choice with Text Editors like Smultron: we list more than 50 alternatives for Windows, Mac, Linux, Chrome OS and the web.
A text editor forked from Pluma and Gedit. Xed is the default text editor of Linux Mint. It can be customized and is available in multiple languages.
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Notepad more focused on developing than just scribble down notes.
These is not an exhaustive feature list, but gives you some idea of the features present in Programmer’s Notepad.
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RJ TextEd is a full featured text and source editor with Unicode support, syntax highlighting and code folding. The functionality extends beyond text files and includes support for HTML editing with integrated preview, spell checking, auto completion, HTML validation, templates...
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Open source note application with desktop, web, and mobile web access features intuitive file organization, folder grouping, color-coded tags, side panel search, auto updates, word and character counts, reading time estimates, and customizable themes.
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Introducing Fastedit, designed to make editing and organizing your documents effortless. With the ability to open multiple tabs, you can easily edit or view multiple documents at once. The app also features line numbering and custom designs to personalize your experience.
BabelPad is a free Unicode text editor for Windows that supports the proper rendering of most complex scripts, and allows you to assign different fonts to different scripts in order to facilitate multi-script text editing.
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Code Writer is a free text and code editor app for the Windows platform, downloadable from the Windows Store. Use it as a replacement for Notepad and other quick edit apps.
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Caret is a lightweight-but-powerful programmer's editor running as a Chrome Packaged App. Inspired by Sublime and built on top of the Ace editing component, it offers:
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Howl is a general purpose editor that aims to be both lightweight and fully customizable. It is built on top of the very fast LuaJIT runtime, and can be extended in either Lua or Moonscript. It has a minimalistic UI driven mainly by the keyboard.
CodeLobster - Free portable PHP IDE with support Drupal, Smarty, WordPress, Joomla, JQuery, CodeIgniter, HTML, CSS, JavaScript, CakePHP, Facebook, Symfony
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