The popularity of personal microcomputers on the other hand has opened up a competitive market for generic software which can be used by different types of facilities to improve recordkeeping and operational efficiency. This chapter describes the readily avialable types of software applicable to process analysis and control of small water and wastewater facilities. There are many applications in treatment plant process analysis for the use of standardized software products. These products generally include graphics programs, spreadsheets, data base management, word processing and communication software. The use of a microcomputer can be initiated by the staff of small facilities without the immediate need for custom software or expensive hardware capabilities. Word processing software is designed for the creation and manipulation of text. Typical application of telecommunications software is for the access of information from service bureaus or terminal emulation for a larger mainframe computer.