There are many alternatives to UltraEdit for Linux if you are looking for a replacement. The best Linux alternative is Visual Studio Code, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to UltraEdit and loads of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to UltraEdit are Atom (Free, Open Source), Sublime Text (Free Personal), Vim (Free, Open Source) and Eclipse (Free, Open Source).
Neovim is a project that seeks to aggressively refactor Vim in order to: Simplify maintenance and encourage contributions. Split the work between multiple developers. Enable the implementation of new/modern user interfaces without any modifications to the core source.
Code::Blocks is a free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. An IDE with all the features a developer need, having a consistent look, feel and operation across platforms.
Bluefish is a powerful editor targeted towards programmers and webdesigners, with many options to write websites, scripts and programming code. Bluefish supports many programming and markup languages, and it focuses on editing dynamic and interactive websites.
CudaText is a cross-platform text editor, written in Lazarus. It starts quite fast (0.5 sec with ~30 plugins on CPU Intel Core i3 3Hz). It is extensible by Python add-ons (plugins, linters, code tree parsers, external tools).
Aptana Studio is a complete web development environment that combines powerful authoring tools with a collection of online hosting and collaboration services that help you and your team do more. Includes support for PHP, CSS, FTP, and more...