Watchapp dev language.

The core of the arcapos applications is written in C, so are most of the Lua modules (bindings to various hardware or protocols).

The Game Pencil Engine Editor is coded in C/C++.

been programming in c for over a decade, since learning it in college. still use it for various low level projects. used it recently to develop an embedded application for a custom board.

Used in backend and clients for performance heavy tasks.

The Sqreen PHP agent is both a PHP extension, built in C, and a daemon built in Python.

Axis2/c, rampart/c, savan/c, barbershop and custom php extensions.

We use perl with rex to control our distributed systems.

I use perl on some legacy applications.

I use Perl to rip through log files and compare them to some signature files I have created. When I get a match, it adds the bad guy to the list of shame in MySQL.

The whole backend part (deployment and other scripts, business logic, web interface) is written in Perl.

Весь бэкенд (скрипты деплоя и прочие, бизнес-логика, веб-интерфейс) написан на Perl.

Some legacy code is written in Perl

A very expressive language, lets you say the same thing in many different ways

As long as you don't abuse def and Closure

NPL solutions and statistical machine learning.