Compares traits of many languages, without naming any; by Tim Peters.

ROT13 implemented in many programming languages.

Collection of self-reproducing programs: each outputs a copy of its own source code; about 60 languages.

Performance measurements and source code for ~25 benchmark programs in ~25 languages; with side-by-side comparisons for any 2 programming languages, and an interactive weighted ranking for all the languages.

Five short essays compare C (and C++ by extension) to Fortran: Why C is Not a Good Numerical Language, Why C is Not a Good First Language, C's Poor Loop Constructs, C's Pointers and Optimisation, Optimisation through Directives.

Interview with Dennis Ritchie, Bjarne Stroustrup, James Gosling.

Browse, explore some programming language syntax rules, see relations between rules, understand them via BNF (Backus-Naur Form notation) and syntactic diagrams: SQL, PL/SQL, SQL2, IDL; Ada 95, Java, Modula-2; Lazy, Lisp, M5.

Text compares Python and Eiffel, via Tim Peters' Zen rules.

Operator names and syntax elements in various programming languages.

Common algorithms and other sample code in the languages: Bash and Bourne shells, C/C++, Java, MATLAB/Octave, Perl, Python, Ruby, Scheme.