Flex

Computing

Apache Flex, formerly Adobe Flex, technologies for developing rich internet applications
Flex (language), developed by Alan Kay
FLEX (operating system), a single-tasking operating system for the Motorola 6800
FlexOS, an operating system developed by Digital Research
FLEX (protocol), a communication protocol for pagers
Flex, a family of automatic test equipment produced by Teradyne
FLEx, a piece of software used in language documentation
Flex (lexical analyser generator), a lexical analyser generator and a free software alternative to lex
Flex machine, a computer developed by RSRE in the 1980s
CSS Flexible Box Layout, commonly known as Flexbox, a CSS 3 web layout model

Bending, also known as flexure, as used in mechanics
Flexion, in anatomy, a position made possible by the joint angle decreasing
Femtosecond Lenticule EXtraction, a form of refractive eye surgery
Flex circuit, a flexible printed circuit used in electronic assemblies
FLEX mission, a future satellite launch mission by the European Space Agency
Flex temp, a reduced takeoff thrust setting which trades excess performance for reduced engine wear
Flex-fuel, a flexible-fuel vehicle
Inflection point, of a curve in geometry
Power cord, or flex, a flexible electrical cable

Flex Ltd., a software company, previously known as Flextronics
Flex (club), a nightclub in Vienna, Austria
Flex (company) (NASDAQ symbol: FLEX), a contract electronics maker based in Singapore
Flex FM, a London-based radio station
Flex-Elektrowerkzeuge, a German producer of power tools
Flex Linhas Aéreas, a Brazilian regional airline

Amazon Flex, a platform for gig workers performing deliveries for Amazon
ChromeOS Flex, an operating system maintained by Google that is based on ChromeOS
Flex (comics), a fictional superhero
Flex (film), a commercial/short film by English director Chris Cunningham
Flex (magazine), an American bodybuilding magazine
Flex (TV program), a 2021 Philippine variety show
FlexAccount, the main current account offered by Nationwide Building Society since 1985
Flextime, a flexible working arrangement
Fleet Landing Exercises, a series of landing exercises conducted by the Fleet Marine Force, a combined-United States Navy/Marine landing force
Flex Your Rights, a civil-liberties non-profit based in Washington DC, US
Ford Flex, a crossover SUV produced from 2009-2019
Future Leaders Exchange, an American student exchange program for high school students from the former Soviet Union