A power user or an experienced user is a computer user who uses advanced features of computer hardware, operating systems, programs, or web sites which are not used by the average user. A power user may not have extensive technical knowledge of the systems they use and is not capable of computer programming or system administration, but is rather characterised by the competence or desire to make the most intensive use of computer programs or systems. In enterprise software systems, "Power User" may be a formal role given to an individual who is not a programmer, but who is a specialist in business software. Often these are people who retain their normal user job role, but also function in testing, training, and first-tier support of the enterprise software. Users may erroneously label themselves as power users when they are less than fully competent.
Some software applications are often regarded as being particularly suited for power users, and may even be designed as such, due to their inclusion of sophisticated function and feature sets not typically found in other comparable applications. Examples include VLC media player, a multimedia framework/player/server, which includes a complex, feature-rich, and highly customisable interface (and multiple interfaces moreover, beyond simple skinning) with numerous built-in capabilities not typically deemed useful or even understandable to users in the context of other media player suites such as Windows Media Player or iTunes
User testing for software often focuses on inexperienced or regular users. Power users can require different user interface elements compared to regular users, as they may need less help, and fewer cues. A typical example being short cut keys, like CTRL-F or ALT-Enter. A power user might use a program full-time, compared to a casual or occasional users. Power users typically want to operate the software with few interactions, or as fast as possible. And also be able to perform a task in a precise way, where casual users may be happy if they are close enough.