PaperRater.com is a free resource, developed and maintained by linguistics professionals and graduate students to help students improve their writing. It analyses documents in real-time and provide in depth analysis. Some of the features include:
• Plagiarism Detection
• Auto Grader
• Spelling and Grammar Check
• Style and Word Choice Analysis
• Readability Statistics
• Title Validation
• Vocabulary Builder tool
The service does not keep track of submitted papers so its plagiarism detection does not rely on past submissions. This is a web-based service: all processing takes place on the server and the results are displayed in the user’s browser.
The premium version, now in development phase, will offer improved accuracy in plagiarism detection, additional grammar checks and an increased max length for documents.