Ideone compiles and runs code online across C, C++, Java, Python, and many other languages.
CudaText
Cross-platform source code editing is available in CudaText, with downloads and documentation.
About CudaText
CudaText is a text editor for source code and other text, described on its homepage as a cross-platform editor written in Object Pascal. It can be used free of charge, including for business, according to the homepage. Its syntax highlighting covers more than 300 lexers, and it can be extended with Python add-ons for plugins, linters, code tree parsers, and external tools.
The homepage states that the editor starts in about 0.3 seconds with around 30 plugins on Linux on an Intel Core i3 3GHz CPU. This is the developer's own measurement under those conditions. Many functions, including the FTP panel, spell checker, and project manager, are implemented as plugins. The code tree only works where the language lexer supports it.
Key features
- Syntax highlighting for more than 300 languages through lexers
- Code tree showing functions and classes, where the lexer supports it
- Multi-caret and multi-selection editing
- Find and replace with regular expressions
- Binary and hex viewer for files of unlimited size
- Smart auto-completion for HTML and CSS, with inline image and color previews
Best for: Programmers who edit code in several languages and want a free editor that can be extended with Python.
Good for
- Free to use, including for business, according to the homepage
- Extensible with Python add-ons for plugins, linters, and external tools
- Startup time of about 0.3 seconds in the developer's stated test setup
Watch out for
- The code tree is available only for languages whose lexer supports it
- Many features, such as the FTP panel and spell checker, are provided as plugins
CudaText at a glance
- Website
- cudatext.github.io
- Category
- Development › Code Editors & IDEs
- Type
- Online tool
- Pricing
- Free
- Platforms
- Linux, Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
CudaText alternatives
Tools and sites you could use instead, ranked by how closely they match.
Run, save, and share code snippets in dozens of programming languages with the glot.io online playground.
Code can be edited, compiled, and run in many languages through myCompiler’s online IDE.
CP Editor is an editor for competitive programming, with tools for writing and testing solutions.
Write and edit source code on Android with Visual Code Space, a mobile code editor project.
Open source
23 alternatives
Frontend code can be written and previewed in LiveCodes, a browser-based playground.
Open source
24 alternativesFeatured in
8 sites
Best of
8 Best Free Code Editors for Web Projects and Quick Edits
I'd choose VS Code for a website project and Notepad++ for quick Windows edits. The best free code editors solve…
Popular in Code Editors & IDEs
Well-known listings from the same topic.
Notebooks.azurevisualstudio.microsoft.com/vs/features/noteboo…Replayreplay.ioVim Bootstrapvim-bootstrap.comCompiler Explorercompiler-explorer.comDevPoddevpod.shZedzed.dev
CudaText FAQ
Can CudaText be used for business work?
The homepage states that it can be used free of charge, even for business.
Where can I find documentation?
The homepage links to a wiki, which it describes as containing almost complete documentation for the program.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.