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