In complexity theory the class APX (an abbreviation of "approximable") is the set of NP optimization problems that allow polynomial-time approximation algorithms with approximation ratio bounded by a constant (or constant-factor approximation algorithms for short).
APX Group (APX) is an energy exchange operating the spot markets for electricity in the Netherlands, the United Kingdom, and Belgium.
Vivint, Inc. (formerly known as APX Alarm Security Solutions Inc.) is a private smart home services provider in the United States and Canada.
APXS is also an abbreviation for APache eXtenSion tool, an extension for Apache web servers.
The 25 mm Hotchkiss anti-tank gun was a French anti-tank gun that saw service in the first years of the Second World War.
APX may stand for:
Apple is an American multinational technology company headquartered in Cupertino, California, a suburb of San Jose, that designs, develops, and sells consumer electronics, computer software, and online services.
The apple tree (Malus pumila, commonly and erroneously called Malus domestica) is a deciduous tree in the rose family best known for its sweet, pomaceous fruit, the apple.
Apartheid (ZA pronunciation: /əˈpɑːrteɪd/; Afrikaans: [ɐˈpɐrtɦəit]) was a system of institutionalised racial segregation and discrimination in South Africa between 1948 and 1991, when it was abolished.
The Axis powers (German: Achsenmächte, Japanese: 枢軸国 Sūjikukoku, Italian: Potenze dell'Asse), also known as the Rome–Berlin–Tokyo Axis, were the nations that fought in World War II against the Allied Powers.