The Technical Group Laboratory.Inc is a Japanese company dealing with developing, constructing and planning of various computer systems and software. This company supports the operating systems: Java, C, C++, Oracle, asp, Linux, Unix, Windows NT.
TGL has also produced graphical pc games, mostly using the traditional Japanese animation. This includes the well-known series Sengoku Bishōjo e Ken, which has claimed success from China and South Korea. This business is operated by a subsidiary TGL Planning Inc. from 1999. Giga is an adult visual novel brand under TGL Planning.