The tools listed here are provided by companies not affiliated with the Rapid City Public Library.
PaperRater offers a free version which allows users to check up to 5 pages at a time. The program will offer writing suggestions as well as perform a grammar and spelling check. There is a paid account that will allow checking longer documents and including plagiarism information.
Black Hills State University Writing Center
The Black Hills State University offers writing assistance to students on campus as well as distance learning students. Also available to distance and UCRC students.