Flex or FLEX may refer to:

Computing

Apache Flex Apache Flex, formerly Adobe Flex, is a software development kit (SDK) for the development and deployment of cross-platform rich web applications based on the Adobe Flash platform. Initially developed by Macromedia and then acquired by Adobe System ...

, 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 FlexOS is a discontinued modular real-time multiuser multitasking operating system ( RTOS) designed for computer-integrated manufacturing, laboratory, retail and financial markets. Developed by Digital Research's Flexible Automation Business ...

, an operating system developed by Digital Research *

FLEX (protocol) FLEX is a communications protocol developed by Motorola and used in many pagers. FLEX provides one-way communication only (from the provider to the pager device), but a related protocol called ReFLEX provides two-way messaging. Protocol Tran ...

, 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) Flex (fast lexical analyzer generator) is a free and open-source software alternative to lex. It is a computer program that generates lexical analyzers (also known as "scanners" or "lexers"). It is frequently used as the lex implementation tog ...

, a lexical analyser generator and a free software alternative to lex *

Flex machine The Flex Computer System was developed by Michael Foster and Ian Currie of Royal Signals and Radar Establishment (RSRE) in Malvern, England, during the late 1970s and 1980s. It used a tagged storage scheme to implement a capability architect ...

, a computer developed by RSRE in the 1980s * CSS Flexible Box Layout, commonly known as Flexbox, a CSS 3 web layout model

Science and technology

Bending In applied mechanics, bending (also known as flexure) characterizes the behavior of a slender structural element subjected to an external Structural load, load applied perpendicularly to a longitudinal axis of the element. The structural eleme ...

, also known as flexure, as used in mechanics *

Flexion Motion, the process of movement, is described using specific anatomical terminology, anatomical terms. Motion includes movement of Organ (anatomy), organs, joints, Limb (anatomy), limbs, and specific sections of the body. The terminology used de ...

, in anatomy, a position made possible by the joint angle decreasing * Femtosecond Lenticule EXtraction, a form of refractive eye surgery *

Flex circuit Flexible electronics, also known as ''flex circuits'', is a technology for assembling electronic circuits by mounting electronic components on flexible plastic substrates, such as polyimide, PEEK or transparent conductive polyester film. Addi ...

, a flexible printed circuit used in electronic assemblies * FLEX mission, a future satellite launch mission by the European Space Agency *

Flex temp Flex temp is a technique used to produce cost savings through increased engine life and reduced overhaul and fuel costs for airliners by allowing them to take-off at less than rated thrust. For Airbus and Fokker aircraft the technique is known as ...

, a reduced takeoff thrust setting which trades excess performance for reduced engine wear * Flex-fuel, a

flexible-fuel vehicle A flexible-fuel vehicle (FFV) or dual-fuel vehicle (colloquially called a flex-fuel vehicle) is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol f ...

Inflection point In differential calculus and differential geometry, an inflection point, point of inflection, flex, or inflection (rarely inflexion) is a point on a smooth plane curve at which the curvature changes sign. In particular, in the case of the graph ...

, of a curve in geometry *

Power cord A power cord, line cord, or mains cable is an electrical cable that temporarily connects an electrical appliance, appliance to the mains electricity supply via a wall socket or extension cord. The terms are generally used for cables using a AC p ...

, or flex, a flexible electrical cable

Music

* Flex (singer), Félix Danilo Gómez (born 1974), Panamanian singer *

Funkmaster Flex Aston George Taylor Jr. (born August 5, 1967), professionally known as Funkmaster Flex, is an American DJ, rapper, record producer, and host on New York City's Hot 97 radio station. In 1992, he became host of the first hip hop radio show on Ho ...

(born 1968), American DJ and music producer * ''Flex'' (album), Lene Lovich's 1979 second album * ''Flex'' (EP) a 2003 EP by Pitch Black * "Flex" (Dizzee Rascal song), 2007 * "Flex" (Mad Cobra song), 1992 * "Flex" (Polo G song), 2020 * " Flex (Ooh, Ooh, Ooh)", a 2015 song by Rich Homie Quan * "Flex", a 2021 song by TFN * Flex, a break in the recitation tone before the mediation in

Gregorian chant Gregorian chant is the central tradition of Western plainsong, plainchant, a form of monophony, monophonic, unaccompanied sacred song in Latin (and occasionally Greek language, Greek) of the Roman Catholic Church. Gregorian chant developed main ...

*A "flex" in a "flex bar", a technique used in

battle rap Battle rap (also known as rap battling)Edwards, Paul, 2009, p. 25. is a type of rapping performed between two or more performers that incorporates boasts, insults, wordplay and Diss (music), disses originating in the African Americans, African-Amer ...

Organizations

* 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 Flex Linhas Aéreas, styled as FLEX, was a Brazilian non-regular charter airline based at Rio de Janeiro/Galeão International Airport. It is the brand name of Nordeste Linhas Aéreas S.A., judicial successor of former Viação Aérea Rio-Granden ...

, a Brazilian regional airline

People

* Flex Alexander, Mark Alexander Knox (b. 1970), an American actor and comedian * Flex Wheeler (born 1965), American bodybuilder * Walter Flex (1887–1917), German author

Other uses

* Amazon Flex, a platform for gig workers performing deliveries for

Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...

ChromeOS Flex ChromeOS Flex is an operating system maintained by Google that is based on ChromeOS. It is similar to ChromeOS, and is available on devices that aren't Chromebooks. For instance, it can be installed on Windows computers. History In December 202 ...

, an operating system maintained by

Google Google LLC (, ) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial ...

that is based on

ChromeOS ChromeOS, sometimes styled as chromeOS and formerly styled as Chrome OS, is an operating system designed and developed by Google. It is derived from the open-source operating system and uses the Google Chrome web browser as its principal user ...

Flex (comics) Fafnir Falcon Falcona Falligar the Behemoth Falligar the Behemoth, also known simply as Falligar, is a fictional character appearing in American comic books published by Marvel Comics. He makes a single appearance in '' Thor: God of Thunder ...

, 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 Nationwide Building Society is a British mutual financial institution and the largest building society in the world. As of 2024, it serves over 16 million members and operates entirely for their benefit, without shareholders. The society was e ...

since 1985 *

Flextime Flextime, also spelled flex-time or flexitime ( BE), is a flexible hours schedule that allows workers to alter their workday and adjust their start and finish times. In contrast to traditional work arrangements that require employees to work a sta ...

, 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 The Ford Flex is a full-size crossover SUV manufactured and marketed by Ford over a single generation from 2009–2019, as the successor to the Ford Taurus X. The Flex was introduced in 2005 as a concept vehicle based on the Ford D4 chassis ar ...