Vulcraft
Nucor Vulcraft Group engineers and fabricates K-series, KCS-series, LH-series, DLH-series and SLH-series joists as well as joist girders, including special profiles such as single and double pitched, bowstring, arched chords, and scissor.
http://www.vulcraft.com/

Tyder Ltd
Provides digital filter design software which can produce specialised filters e.g. Windowed FFT, Optimal FIR filters, and IIR filters.
http://www.tyder.com/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

OPT Hellas Custom Frequency Control Components
Manufacturers crystals, crystal filters, lc filters rf and microwave filters. Descriptions and catalogs and international sales network.
http://www.opthellas.com

Reclaim filters and system, Inc.
Reclaim Filters brings you reliable and economical solution to your basic filtration needs. Clean and recover your water with our filters and filter systems. Based in Wake Forest North Carolina
http://www.waterreclaim.com/

Finger Lakes Instrumentation
Produces the MaxCam and IMG series CCD cameras for astronomical applications, color filter wheels, DF2 digital focuser and research grade filters.
http://www.fli-cam.com/

OpenPsion
A project to port Linux to the Psion Series 5, Series 5mx, Series 7, NetBook and closely related machines.
http://linux-7110.sourceforge.net/

Fields Institute Publications
Two book series: the Monograph Series and the Communications Series, copublished with the American Mathematical Society.
http://www.fields.utoronto.ca/publications/

Kemo Signal Filters
Electronic filters, a full range of systems and modules
http://www.kemo.com/