calculator.com     

Great selection of miscellaneous calculators – no acoustics, though


CDML     
Great Windows 95/98/NT shareware calculator – all scientific functions, optional RPN notation


Dan Russel’s Page     
Acoustics and Vibration Animations


hp41.org     
Free Emulator of the classic HP41 calculator – neat


Mathtools – MATLAB files etc.     
The scientific portal for MATLAB files, toolboxes, links and resources


The MathWorks     
Developers of MATLAB technical computing software for engineering and science


Mathtype     
Mathematical Equation Editor to be embedded into Mac and Windows based office software


Multimedia Physics Course
Very nice Physics tutorial with lots of cute animations


Windows 95/98 Mathematical Graphing Tools     
Large selection of freeware/shareware graphing tools