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We believe in the open web, think internet services should be sustainable, build for the long term.

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Wcalc is a very capable calculator. It has standard functions (sin, asin, and sinh for example, in either radians or degrees), many pre-defined constants (pi, e, c, etc.), support for using variables, "active" variables, a command history, hex/octal/binar

Knots can be loaded from a database of almost 1000 knots and links or sketched by hand in three dimensions. Also, knots may be constructed via the Conway notation or using a tangle calculator. A number of special knot types (torus knots, knot chains, Liss

Link exchange for the technical computing community

Sysquake is innovative, powerful and flexible software for understanding systems, solving problems, and designing products. What makes it special is its unparalleled graphical interactivity.

Fractal Explorer is a freeware fractal generator that can produce mysterious and beautiful mathematically-based images. Not just a tool for professionals, FE can provide hours of entertainment for beginners and experts alike !

Maxima is a descendant of DOE Macsyma, which had its origins in the late 1960s at MIT. It is the only system based on that effort still publicly available and with an active user community, thanks to its open source nature. Macsyma was the first of a new

GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that

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