I have used many languages over 20 years or so.
I have experience with the following areas: C++,D, C#
Pl/1,Pl/Sql, Perl, Python,HTML,XML, CSS,XSL, Delphi,Lazarus,Pascal, Php,Java,Javascripts , GWT, Flash, Google Spanner, Google Functions, Google Schedule.
Databases: T-Sql, Oracle,Pl/Sql
Domains: multithreaded programming, user interface design and implementation, server side programming, parsers, databases, algorithm design, trading bots.
Software: VIsual Studio, Visual Code, Eclipse, Ultimate++ Ide, Excel., Word, LibreOffirce, Pspad, Ultraedit