RedCrab is a scientific calculator with a full screen formula editor. The mathematical expressions are not typed in a typical command line, but can be enter in an editor window similar to a piece of paper. The calculator display the result either under or next to the expression. The handling is easier than conventional calculator. The calculator's editor supports the entry of complex algebraic equations like fractions, square roots, exponents, etc. for technical and scientific applications.

CudaText is a cross-platform text editor, written in Object Pascal. It is open source project and can be used free of charge, even for business. It starts quite fast: ~0.3 sec with ~30 plugins on CPU Intel Core i3. It is extensible by Python add-ons: plugins, linters, code tree parsers, external tools. Syntax parser is feature-rich, from EControl engine. Syntax highlight for lot of languages (270+ lexers). Code tree: structure of functions/classes/etc, if lexer allows it. Find/Replace with regular expressions. Support for many encodings. Correctly saves binary files. Smart auto-completion for HTML, CSS.