Apps to Syntax Highlighting

Qt Creator is a powerful, cross-platform Integrated Development Environment (IDE) tailored for building applications with the Qt framework. It supports C++, QML, and JavaScript, offering a comprehensive suite of tools for designing UIs, writing code, debugging, and deploying software across various platforms.

Light Table is an innovative code editor designed to provide developers with instant feedback and a deeper connection to their code. It offers a clean and customizable interface, focusing on interactive development and visualizing data flow.

FlashDevelop is a powerful and highly-extendable Integrated Development Environment (IDE) purpose-built for Flash and ActionScript development. It offers robust features for building websites, web applications, desktop applications, and video games, with strong support for ActionScript 3 and Haxe projects.

Haroopad is a discontinued markdown-enabled document processor designed for creating web-friendly content. It offers a distraction-free writing environment with live preview and syntax highlighting, making it suitable for bloggers, writers, and developers.

Typora is a minimalist Markdown editor that unifies writing and previewing into a seamless experience. It provides a distraction-free environment with real-time rendering, allowing users to focus solely on their content without the need for separate preview panes or modes. It supports a wide range of Markdown features and offers flexible export options.

trolCommander is a powerful and lightweight cross-platform file manager. It is a fork of the popular muCommander, offering a dual-pane interface, rich feature set including built-in viewers, terminal, FTP/SFTP support, and extensive customization options. Designed for efficiency and speed, it's an excellent alternative for users seeking advanced file management capabilities across various operating systems.

Hastebin is a simple, free, and open-source paste service designed for sharing code snippets, notes, and text quickly and anonymously. It emphasizes speed and a clean interface for effortless pasting and sharing.

Nvu is a discontinued, open-source WYSIWYG HTML editor. Based on the Mozilla Application Suite's Composer component, it provided a simple visual interface for creating web pages without needing extensive coding knowledge. It was a popular choice for beginners and non-programmers for basic website creation.

TextPad is a robust and lightweight text editor designed for Windows systems. It offers a comprehensive set of features for editing plain text files, source code, and HTML documents. With support for syntax highlighting, macros, and a tabbed interface, it provides a productive environment for programmers and general users alike.

TeXstudio is a comprehensive, cross-platform open-source LaTeX editor designed for creating professional documents. It offers a range of features to simplify the LaTeX writing process, including syntax highlighting, an integrated PDF viewer, built-in text editor, and support for a wide array of LaTeX commands and packages.

CSSEdit is a dedicated CSS editor designed for macOS. It provides a visually focused approach to stylesheet creation and modification, combining powerful visual tools with direct code editing capabilities. Targeting web designers and developers, it offers a streamlined workflow for managing CSS.

MarkdownPad was a powerful, feature-rich Markdown editor designed specifically for Windows users. It provided a streamlined environment for writing Markdown with a live preview, syntax highlighting, and robust customization options, making it a popular choice for developers, writers, and bloggers.

Dash provides developers with instant, offline access to a massive collection of API documentation sets directly on their Mac. It's an essential tool for boosting productivity by eliminating the need for constant internet access and fragmented online searches for developer documentation.

Bloodshed Dev-C++ was a robust free IDE for C and C++ programming in Windows. It provided a complete development environment with compiler, debugger, and editor, commonly used by students and enthusiasts.

WebStorm is a powerful JavaScript IDE from JetBrains, designed for modern web development. It offers advanced coding assistance for JavaScript, HTML, and CSS, alongside support for many related technologies like Node.js, React, Angular, and Vue.js. Its rich feature set includes smart code completion, error detection, refactoring, debugging, and integrated development tools.

CherryTree is a powerful, free, and open-source hierarchical note-taking application. It allows you to organize your thoughts, ideas, notes, and code snippets in a tree-like structure with rich text editing and syntax highlighting.

IDLE (Integrated DeveLopment Environment) is the standard IDE that comes bundled with the Python programming language. It provides a simple and user-friendly environment for writing, running, and debugging Python code, making it an excellent choice for beginners and casual development tasks.

GitHub Gist is a simple way to share snippets of text and code. It’s built on the Git version control system, offering basic versioning and the ability to embed snippets directly into websites and blogs. Ideal for quick code sharing, collaborative editing, and integrating technical examples.

Pastebin.com is a popular web-based service designed for storing and sharing plain text online. It's widely used by developers, system administrators, and anyone needing to quickly share code snippets, log files, or other text-based information privately or publicly.

Bluefish is a powerful yet lightweight code editor designed for web developers and programmers. It offers a wide array of features for HTML, CSS, JavaScript, PHP, and many other programming languages, focusing on efficiency and ease of use for building dynamic websites and applications.

SciTE is a free and open-source text and code editor built on the SCIntilla editing component. It's designed to be a lightweight yet powerful tool for programmers and web developers, offering syntax highlighting, code folding, autocompletion, and extensibility across multiple platforms.

Xcode is Apple's integrated development environment (IDE) for macOS, providing a comprehensive suite of tools for building applications for all Apple platforms, including macOS, iOS, watchOS, and tvOS. It offers powerful features like code completion, debugging tools, and a visual interface builder.

UltraEdit is a powerful and versatile text, hex, and code editor designed for Windows, Mac, and Linux. It offers a comprehensive feature set for developers, programmers, web designers, and general users working with text files, code, and binary data.

TextWrangler was a widely-used, free text and code editor for macOS, renowned for its simplicity, reliability, and powerful features derived from its professional sibling, BBEdit. It offered a clean interface suitable for both basic text editing and light coding tasks.

Kate, the KDE Advanced Text Editor, is a powerful yet lightweight text editor popular among developers and advanced users. Offering robust features like syntax highlighting, built-in terminal, extensibility via plugins, and comprehensive customization options, Kate caters to a wide range of text editing and coding tasks across platforms.

Visual Studio Code (VS Code) is a free, open-source, lightweight yet powerful source code editor developed by Microsoft. It supports a wide range of programming languages and offers robust features like debugging, intelligent code completion (IntelliSense), built-in Git control, and an extensive ecosystem of extensions for enhanced functionality. Available for Windows, macOS, and Linux, VS Code has become a popular choice for developers across various disciplines.

PhpStorm is a powerful, commercial IDE for PHP developers, built on the renowned IntelliJ IDEA platform. It offers extensive features for efficient coding, debugging, and project management across multiple platforms.

PSPad is a versatile, freeware text and code editor designed for Microsoft Windows. It offers a rich set of features for developers, including syntax highlighting, a built-in FTP client, project management, and a hex editor, all within a lightweight and portable package.

Komodo Edit is a powerful yet lightweight text editor specifically designed for dynamic programming languages. It offers a comprehensive suite of features for developers working with languages like Python, PHP, JavaScript, and Perl, providing smart editing tools, a customizable interface, and extensibility through plugins.

Code::Blocks is a powerful, free, open-source integrated development environment (IDE) designed for C, C++, and Fortran programming. It offers extensive features for coding, debugging, and building applications across multiple operating systems, catering to both beginners and experienced developers.