AutoPara for AutoCAD
Parametric driven design, change the dimension, change your design. Can your AutoCAD do like this? AutoPara, a powerful parametric engine for AutoCAD, make you more productive.
http://www.axcad.com/download/autopara.exe - 1Mb - Download - Screenshot

FindGraph
FindGraph is comprehensive graphing, curve fitting, and digitizing tool. FindGraph offers 12 generic fits, including linear regression, logistic functions, fourier approximation, neural networks, B-splines and parametric curves least squares approximations, plus a library of over 300... The program comes with 200 built-in common graphing 2D functions support for polar, cartesian, and parametric equations. ... Built-in Wizard helps to digitize the data. ... The program supports OLE automation and can be built-in to other software applications.
http://www.uniphiz.com/findgraph/fgraph.exe - 3Mb - Download - Screenshot

FlatGraph
Plotting functions (usual and parametric) with more possibilities. Differentiation of any order (with simplification). Construction of tangents to the graph. The simple and clear interface with the detailed documentation and examples of work. The program is designed both for inexperienced and... FlatGraph allows: - To enter one or several functional expressions of any complexity for display and (or) their differentiation; - To carry out symbolical differentiation for the specified order of a derivative, and also to carry out simplification of the received derivative; - To investigate...
http://willy.nm.ru/files/FlatGraph.rar - 567Kb - Download - Screenshot

Sound Effect Maker
Sound Effect Maker can create sound effects for sound file. It supports the sound effects such as chorus, compression, distortion, echo, flange, gargle, parametric equalizer, reverberation. It can adjust the following parameters of the sound effects: Chorus: wet/dry mix, depth, feedback,... parametric equalizer: center freq, bandwidth, gain. ... gargle: rate. ... Reverberation: in gain, reverb mix, reverb time, highfreq RT ratio. ... Echo: wet/dry mix, feedback, left delay, right delay, pan delay Flange: wet/dry mix, depth, feedback, frequency, delay, waveform, phase.
http://www.009soft.com/products/soundeffect.exe - 474Kb - Download - Screenshot

SurfX3D
Surface Explorer 3D plots mathematical surfaces in 3D. User defined surface equations can be explicit, implicit, or parametric. Surface and color equations are specified by user. Can export to clipboard, VRML, POV, DXF, printer. MFC C++ source code included. ... Freeware.
http://home.comcast.net/~kqdailey/SurfX3D/SurfX3D.zip - 1Mb - Download - Screenshot

ZGrapher
This graphing calculator can plot y(x), x(y), polar, parametric and table-defined functions. All your graphs and coordinate space may be fully customized. You can comment your graphs using labels and legend. For a few seconds you can obtain derivatives, tangents, normals and calculate integrals. ... Results of your work may be exported to Word or saved as BMP, GIF and PCX pictures. ... Regression analysis will help you to find trend of your data.
http://www.zgrapher.com/zgrapher.zip - 621Kb - Download - Screenshot

Calc 3D Pro
Calc 3D is a collection of mathematical tools for highschool and university. The calculator can do statistics, best fits, function plotting, integration. It handles vectors, matrices, complex numbers, coordinates, regular polygons and intersections. For objects ( like point, line, plane and... Carthesian plot, polar plot, parametric plot, best fit, fast fourier transformation, histogram, smooth,... ... Cartesian, spherical and cylindrical coordinates can be transformed into each other.
http://www.calc3d.com/zip/cldpen01.exe - 4Mb - Download - Screenshot

DART XP PRO
An affordable audio recording, restoration, and CD burning solution that offers the easiest way to achieve professional results. Use DART XP Pro to record from any audio source, or use on existing audio files to clean up even the most troublesome problems. ... DeNoise Plus FFT/AR - Now choose between two methods of spectrum estimation - the nonparametric (FFT) approach and the parametric (AR) approach. ... DeHiss Plus FFT/AR - Now choose between two methods of spectrum estimation - the nonparametric (FFT) approach and the parametric (AR) approach.
http://Download.dartpro.com/dartxppro.exe - 6Mb - Download - Screenshot

Graphmatica
a powerful, easy-to-use, equation plotter with numerical and calculus features: - Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations. - Up to 999 graphs on screen at once. - New data plotting and curve-fitting features. ... - On-line help and demo files make getting up to speed a snap. ... In summary, a great tool for students and teachers of anything from high-school algebra through college calculus. ... - Print your graphs or copy to clipboard as bitmap or enhanced metafile in black-and-white or color.
http://www.graphmatica.com/distrib/grmat20n.zip - 322Kb - Download - Screenshot

Advanced Grapher
Powerful but easy-to-use graphing, curve fitting and calculating software. Graphs Cartesian (Y(x) and X(y)), polar and parametric functions, graphs of tables, equations (implicit functions), inequalities and slope fields. Up to 100 graphs in one window. ... The program has printing capabilities, multi-document interface, customizable toolbars. ... Supports English, Dutch, French, German, Italian, Portuguese, Russian and Spanish interfaces. ... You will be able to create high-quality graphs and copy them to your documents (as EMF or BMP).
http://www.alentum.net/files/agrapher.zip - 1Mb - Download - Screenshot