The OWL also known as the online writing lab is located within the Purdue University and they house writing resources, instructional material, and they provide free services to students, the community and users all over the world.  Their mission statement says the Purdue University Writing Lab and Purdue Online Writing Lab (OWL) are focused on helping clients in their overall development of their writing skills. It doesn't matter what their skill level entails they will are available to help through several different ways such as online participation, community engagement, and online consultations.  The Purdue Writing Lab also assists the Purdue, West Lafayette campus and they coordinate with local literacy steps.

The Purdue OWL offers worldwide support through their online services and reference materials.   This site is one of the most comprehensive writing resources and the categories on the site:

• General Writing
• Research and Citation
• Teacher and Tutor Resources
• Subject Specific Writing
• Job Search Writing
• English as Second Language
• About the OWL
• OWL Exercises
• Giving to the OWL

Their suggested resources include:

• MLA Guide
• ALA Guide
• How to Navigate the New OWL
• Media File Index
• OWL Exercises
• Grades 7-12 Instructors and Students
• English as a Second Language
• Non-Purdue Instructors and Students
• Purdue Instructors and Students
• Professional Writers
• Parents
• Adult Basic Education (GED, ESL, Cover Letters, Resumes)
• Writing and Teaching Writing
• Research
• Grammar and Mechanics
• Style Guides

They also offer RSS feeds and podcasts.  The Purdue Online Writing Lab (OWL) shares the most popular resources on the site. Currently the most popular are:

• OWL Exercises
• APA Formatting and Style Guide
• MLA 2009 Formatting and Style Guide
• How to Avoid Plagiarism
• How to Write the Basic Business Letter
• Developing a Resume