Lazarus is an IDE to create (graphical and console) applications with Free Pascal, the (L)GPLed Pascal and Object Pascal compiler that runs on Windows, Linux, Mac OS X, FreeBSD and more.

Papirus is a SVG-based icon theme, drawing inspiration from Material Design and flat design.

Flex is a tool for generating scanners: programs which recognized lexical patterns in text. It reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code.

lighttpd is a small webserver and fast webserver developed with security in mind and a lot of features. It has support for * CGI, FastCGI and SSI * virtual hosts * URL rewriting * authentication (plain files, htpasswd, LDAP) * transparent content compression * conditional configuration * HTTP proxying and configuration is straight-forward and easy.