Computers/Video Games

• IGS Go server
  IGS Go server
  The IGS, short for Internet Go Server, also known as Pandanet, located in Tokyo, Japan, is a server that allows players of the game of Go to observe and play against others over the Internet. Started in 1992 by Tim Casey, Chris Chisolm, and Mark Okada, it was the first server of its kind...
  
  
• iGamespot, former professional MLG Halo 2 team
• Information Gateway Services
  Information Gateway Services
  Information Gateway Services is an Internet service provider in Ontario. The company has 18 locations across Canada, serving Windsor, London, Toronto, and the rest of Southern Ontario. It also serves the Greater Vancouver area in British Columbia....
  
  , an Internet Service Provider
• Information Global Service, video game company
• Initial Graphics Exchange Specification and the file extension thereof (.igs)
• Interactive geometry software
  Interactive geometry software
  Interactive geometry software are computer programs which allow one to create and then manipulate geometric constructions, primarily in plane geometry. In most IGS, one starts construction by putting a few points and using them to define new objects such as lines, circles or other points...
  
  
• International Games System
  International Games System
  International Games System or IGS is a company based in Taiwan which develops video game software for the arcade and PC. It was founded in 1989.- History :*1991:IGS, International Games System Co., LTD was founded...
  
  , a Taiwan-based arcade and PC video game developer, founded 1989
• Interactive Gaming Software, a US based computer game distributor

Technology

• Inertial guidance system
• Instrument Guidance System
• Insertion Gain Smoothing, a technique used in Signal Processing, primarily with regards to Acoustic Technologies
• Image guided surgery or computer assisted surgery
• Information Gathering Satellites, Japanese military reconnaissance satellites

Science

• Institute of General Semantics
  Institute of General Semantics
  The Institute of General Semantics is a not-for-profit corporation established in 1938 by Alfred Korzybski, to support research and publication on the topic of General Semantics. The Institute publishes Korzybski's writings, including the seminal text Science & Sanity, and books by other authors...
  
  
• Institute of Geological Sciences
• International Glaciological Society
  International Glaciological Society
  The International Glaciological Society was founded in 1936 to provide a focus for individuals interested in glaciology, practical and scientific aspects of snow and ice. It was originally known as the 'Association for the Study of Snow and Ice'. The name was changed to the 'British Glaciological...
  
  
• International Graphonomics Society
  Graphonomics
  Graphonomics is the interdisciplinary field directed towards the scientific analysis of the handwriting process and the handwritten product. Researchers in handwriting recognition, forensic handwriting examination, kinesiology, psychology, computer science, artificial intelligence, paleography and...
  
  

Schools

• International Grammar School
  International Grammar School
  International Grammar School is an independent, coeducational, secular, day school, located in Ultimo, an inner city of Sydney, New South Wales, Australia....
  
  , Sydney
• Ilkley Grammar School
  Ilkley Grammar School
  Ilkley Grammar School is a co-educational comprehensive school in Ilkley, West Yorkshire, England, that specialises in humanities and sciences.-History:-Early years:...
  
  
• Ipswich Grammar School
  Ipswich Grammar School
  Ipswich Grammar School is an independent, non-denominational, day and boarding school for boys, located in Ipswich, a city situated on the Bremer River in South East Queensland, Australia...
  
  
• Ivanhoe Grammar School
  Ivanhoe Grammar School
  Ivanhoe Grammar School is an independent, co-educational, day school, located in Ivanhoe and Mernda , both located in the north-eastern suburbs of Melbourne, Victoria, Australia....
  
  
• Islington Green School
  Islington Green School
  Islington Green School was a comprehensive mixed secondary school from 1966 to 2008. The school was situated in North London and had an age range of 11 to 16. The City of London Academy in Islington replaced Islington Green School in September 2008...
  
  

Other

• Imerslund-Gräsbeck syndrome
  Imerslund-Gräsbeck syndrome
  Imerslund-Grasbeck syndrome or Imerslund-Najman-Grasbeck syndrome or Imerslund-Grasbeck disease is an autosomal recessive, familial form of vitamin B12 deficiency caused by malfunction of the receptor located in the terminal ileum. This receptor is referred to as "Cubam", and is composed of two...
  
  
• Irish Georgian Society
  Irish Georgian Society
  The Irish Georgian Society aims to encourage an interest in and to promote the conservation of distinguished examples of architecture and the allied arts of all periods in Ireland...
  
  
• International Graduates Scheme
  International Graduates Scheme
  The International Graduates Scheme was a UK immigration scheme which was launched on 1 May 2007 and ended on 30 June 2008, when it was replaced by Tier 1 . It allowed non-EEA nationals who successfully complete a relevant UK degree or postgraduate qualification to work or set up a business in the...
  
  , a UK immigration scheme
• The ISO 639-3 code for Glosa
  Glosa
  Glosa is an international auxiliary language based on a previous draft auxiliary called Interglossa. As an isolating language, there are no inflections, so that words always remain in their dictionary form, no matter what function they have in the sentence...
  
  constructed language