General Filtration
Products and expertise for liquid filtration including filter equipment, filteraids, roll media, filter paper, filter pads, filter cartridges, activated carbon and bleaching clay.
http://www.generalfiltration.com/

Oberlin Filter Company
Manufactures and distributes range of filtration products and equipment. Includes filter cloths, filter bags and cartridges, air filter units, and selection of new and used filter systems. Offers free analysis of wastewater samples.
http://www.oberlinfilter.com/

The New Laws of Gravity
Online book introducing a scalar theory of relativistic gravity, including applications to antigravity, cosmology, quantum gravity, and gravitational radiation; by Paul Bird.
http://users.whsmithnet.co.uk/paulbird/gravbook/

EDCON Gravity and Magnetics
Gravity and magnetic data acquisition, processing and interpretation. Specializing in airborne, borehole, land and marine gravity and magnetics for environmental, engineering and energy industries.
http://www.edcon.com/

Knelson Gravity Solutions
KGS, provides total gravity concentration solutions. A full range of products and services are available including gravity amenability testing, flow sheet development, circuit engineering and supply of turnkey gravity circuits worldwide.
http://www.knelsongravitysolutions.com

Jens J. Nielsen's Home Page
Arbitrary length FFT C-source, 3D gravity simulator, quantization of FIR filter coefficients. C source.
http://home.get2net.dk/jjn

Matters of Gravity (2006-present)
Newsletter of the American Physical Society's Topical Group on Gravity, published two times a year, which gives a highly informative overview of recent developments in gravity and general relativity research. Site contains links to the editions Fall 2006 and later.
http://www.oakland.edu/physics/Gravity.htm

DVP Technologies
Eye Fidelity Tools include the moire filter, graininess filter and JPEG filter.
http://www.dvp.co.il/

Lianda Filter Equipment Co.,Ltd.
Anping Lianda Filter Equipment Co.,Ltd.is an exporter and manufacturer of stainless steel melting filter element, pleated and pipe type,disc filters and filtration wire cloth: over 80 percent of filter elements for export
http://www.lianda-filter.com/

AACplayer
The world's largest development and download repository of Open Source code and applications
http://sourceforge.net/projects/aacplayer/