On-line editor, compiler and runtime for various languages. Although Fortran is claimed to be supported, I have not been able to run a simple program.

Tutorial about programming in Fortran 77 from Stanford university. Includes links to language standards, tips about numerical libraries and more.

Blog about programming (Emacs, Common Lisp, etc.). Includes a demonstration of a HTML5/JavaScript based presentation software. Found via a comment in powerline.el on the EmacsWiki.

Introduction to the Haskell programming language. Also available on paper.

Tool to convert entire CVS repositories into SVN.

XPP (XPPAUT is another name; I will use the two interchangeably) is a tool for solving * differential equations, * difference equations, * delay equations, * functional equations, * boundary value problems, and *stochastic equations.

Notes about the Ten15 operating system developed in the early nineties.

andLinux is a complete Ubuntu Linux system running seamlessly in Windows 2000 based systems (2000, XP, 2003, Vista, 7; 32-bit versions only). It is based on CoLinux.

Ymacs is an Emacs-like editor that works in your browser. Currently (starting with tag v0.4 in the code repository) it works in recent versions of Firefox (and other Gecko-based browsers), Google Chrome and Apple Safari.

DMTCP (Distributed MultiThreaded Checkpointing) is a tool to transparently checkpointing the state of an arbitrary group of programs spread across many machines and connected by sockets. It runs directly on the user binary executable, without needing to modify either the user binary or the operating system. Among the applications supported by DMTCP are OpenMPI, MATLAB, Python, Perl, and many programming languages and shell scripting languages. With the use of TightVNC, it can also checkpoint and restart X-Windows applications, as long as they do not use extensions (e.g.: no OpenGL, no video).