Nan Hai Da Chang Metal & Electric Factory
Established in 1989,professionally invents and produces full range of indoor switches,trailing sockets,socket adaptors,plus,extension wires and other electrical appliances.
http://www.nh-dachang.com/

Ugcom. Co., Ltd.
Manufactures crt socket, ac socket, jack socket, jack block, shield box, rf splitter, bn connector, direct connector, antenna adapter and receptacle peri crt socket. From Korea.
http://www.ugcom.net/

Yueqing City Success Industry Company
Manufacture of concentric socket series, out-wiring sockets and wiring -post socket series, switches and power-supply socket. From China.
http://www.chinacgic.com/

PortMess
Network socket tester useful for finding bugs with socket handling.
http://prowl.org/programs/portmess/

Robolights
Manufacturer of the Smart Socket injection molded socket outlet box for use on internally wired stage lighting bars.
http://www.robolights.co.uk/

Socket Communications
Socket Mobile offers a fully integrated, flexible, and easy-to-optimize premium platform with all the essential scanning and connectivity peripherals. The Socket system brings just the right mobile business functions to today’s vast diverse marketplace – easily customized to meet a range of deployment needs.
http://www.socketcom.com/

Crescent Internet ToolPak
Bundle of ActiveX controls for FTP, HTTP, IMAP4, NNTP, POP3, RAS, SMTP, socket client, socket server, UUEncode, and Telnet. By Sax Software Corp. [Control, Commercial]
http://www.saxsoft.com/ipak/

Smart Socket by PDM Systems Inc.
Offers a DIN rail mountable, programmable relay socket with 20 control functions that may be selected for instant use with a standard 8 pin octal relay.
http://smartsocketbypdm.com/

Socket++
Defines a family of C++ classes that can be used more effectively than directly calling the underlying low-level system functions. One distinct advantage of the socket++ is that it has the same interface as that of the iostream so that the users can perform type-safe input output. [Open Source]
http://www.linuxhacker.at/socketxx

Non Standard Socket Screws Ltd
If it's standard, we stock it, if it’s special, we stock it anyway! We manufacture and distribute standard and specialist screws, fastenings and associated products for companies worldwide. NSSS Ltd are the main distributors of Unbrako and Holo-Krome. We can also produce specialist parts to complement the Socket Screw range.
http://www.nssocketscrews.com