Revere Control Systems
- Selective directory of industrial automation resources. Links to the larger software suppliers, systems integrators and other sites of interest.
- http://www.reverecontrol.com/links.asp

Recycler's World
- Specialised directory of software for the recycling industry. Includes vendors applicable to recycling of ferrous and non-ferrous metals, plastics, packaging and construction materials.
- http://www.recycle.net/equip/menu/equip_71.html

Weblinkone
- Listing major vendors of manufacturing execution systems (MES)and technology solutions for industrial engineering.
- http://www.weblinkone.com/links/mes.htm

J.R. Services
- Selective listing of vendors and resources for software engineering tools.
- http://www.johnaho.com/links.htm

Techexpo
- Listings of hi-technology companies with products for engineering, medical and scientific application.
- http://www.techexpo.com/directry.html

TechEng Designs
- Directory of software vendors for diameter, capacity and liquid flow calculations and structural design of stacks, flowmeters and instrumentation. Also includes professional associations, educational resources and consultants.
- http://www.eng-applications.com/hotlist.htm

WebDirectory
- Annotated listing of vendors and directories of tools for software engineering.
- http://www.01webdirectory.com/software.htm

University of Pennsylvania
- Links to software vendors, directories and other resources for Bioengineering. Themes include software for biosignal processing and control, biomechanics, biomaterials and bioinstrumentation.
- http://www.seas.upenn.edu/be/misc/bmelink/dsp.html

RF Cafe
- Shareware, freeware and commercial applications for electrical and electronic engineering. Categories include circuit simulators, system simulators; antenna, electromagnetics and transmission line simulators and schematic capture, layout and block diagram
- http://www.rfcafe.com/vendors/components/software_home.htm

LMNO Engineering
- Listing of software and resources for hydrology and related areas of science and engineering. Focussing on pressure pipes, hydraulics, groundwater planning and control and environmental engineering.
- http://www.lmnoeng.com/links.htm

TenLinks.com
- Software directory for engineering professionals. Broad categories are: CAE, CAD, civil engineering software, document management and process software. Sub-Categories include data visualization and analysis, ergonomic modeling and analysis, fluid dynamics
- http://www.tenlinks.com/engineering/software/index.htm

Engineering Central
- Categorised listing of software for chemical, process control, civil, electrical, environmental, geotechnical and mechanical engineers.
- http://www.engcen.com/software.htm

Electrical Engineering Links
- Selective listing of commercial software for electrical engineering compiled by a working engineer. Focus on process control, drawing and design, production simulation and numerical control software.
- http://www.mindspring.com/~brucec/l3sof.htm

EEVL
- Directory of engineering, mathematics and computing. Sub-categories include software for aerospace, defence and bioengineering; software for statistical, geometric and numerical analysis and tools for software engineering.
- http://www.eevl.ac.uk/

MachineShopWeb
- Directory of industrial engineering software with categories including: CAD/CAM, quality control/SPC, NC program optimization and NC verification.
- http://www.machineshopweb.com/mansoft/mansoft.htm

University of California
- Directory of software for food processing. Includes software for product formulation, compliance, thermal processing and auditing and food safety.
- http://www-seafood.ucdavis.edu/Pubs/software.htm

ITtoolbox
- IT directory and community for supply chain professionals. Focusing on process optimisation, advanced planning and scheduling, industrial engineering and supply chain management.
- http://supplychain.ittoolbox.com/

Midatek
- Links to SCADA, HMI and automation software. Features software for process control, programmable logic controllers (PLCs) as well as information resources and reviews for industrial automation.
- http://www.midatek.dk/links.htm

University of Nottingham
- A repository to research groups in optimisation and process scheduling, other scheduling resources and businesses specialising in scheduling software.
- http://www.asap.cs.nott.ac.uk/iol/is-network/links.shtml

INFORMS
- Diverse collection of vendors of engineering software. Includes software for supply chain management, production engineering, process simulation, resource planning, production scheduling and operations research.
- http://www.informs.org/Resources/Companies/index.html

Strategosinc
- Links to software for lean manufacturing, process simulation, process engineering and production engineering.
- http://www.strategosinc.com/lean_manufacturing_links2.htm

Bridge Engineering Software Directory
- Specialised directory of both shareware and commercial software especially for design and construction of bridges.
- http://www.scsolutions.com/bridge.software.html