Bluefish is a powerful editor designed for programmers and web developers. It has many options for creating websites, scripts and program code. Bluefish supports various programming languages, markup languages and has many features, including:
- Customizable code folding, auto indenting and completion
- Support for remote files operation over FTP, SFTP, HTTPS, WebDAV, etc.
- Site upload and download
- Powerful search and replace engine
- Snippets plugin to automate often used code
- Code-aware in-line spell checking
- Zencoding or Emmet support

OpenWebStart is a modern replacement for the outdated Java Web Start technology and the JNLP (Java Network Launch Protocol) standard.

It provides the most commonly used features of Java Web Start and the JNLP standard, allowing you to continue to use and run Java applications that previously ran through Java Web Start without having to rewrite the code.

Features:

Octave - язык высокого уровня предназначенный для выполнения вычислений численными методами и математических вычислений.
Он представляет собой удобный командный интерфейс для решения линейных и нелинейных математических задач, а также проведения других арифметических экспериментов, используя язык, в большинстве случаев совместимый с Matlab

Colobot (Colonize with Bots) is a game aimed at teaching programming through fun. You play the role of an astronaut traveling with robot assistants in search of a planet to colonize.
The game features real-time 3D graphics and the C++ and Java-like object-oriented language CBOT, which can be used to program the robots available in the game.

KDevelop is a free integrated development environment (IDE). There is source code navigation and debugging for projects in different programming languages, work with different build and version control systems, and all this is implemented on a modular basis.

KDevelop can analyze code in C, C++ and Javascript/QML, and there are also external modules for PHP and Python.

Kicad is an EDA class software package designed for the development of electrical circuits and printed circuit boards

It includes a schematic editor, PCB layout tool, support tools and a 3D result viewer.

Эта игра предназначена для детей в возрасте от 3 лет. Отличается возможностью добавлять собственные изображения

Эта программа представляет собой реализацию оригинальных счетов, она предоставляет китайскую, японскую, корейскую, римскую и русскую версии и может быть изменена для использования другими.

BRL-CAD is a powerful cross-platform Open Source combinatorial Constructive Solid Geometry (CSG) solid modeling system that includes interactive 3D solid geometry editing, high-performance ray-tracing support for rendering and geometric analysis, network-distributed framebuffer support, image and signal-processing tools, path-tracing and photon mapping support for realistic image synthesis, a system performance analysis benchmark suite, an embedded scripting interface, and libraries for robust high-performance geometric representation and analysis.

IDLE is an Integrated Development Environment for Python.
IDLE is written using Tkinter and is therefore available on different operating systems.