To ensure your customers have a rich experience with great content, you'll need more than just a content management system. You'll need a basket of tools to research, generate, market, and track your content.

Here is a list of tools to help you with content. There are content search-engine-optimization-tools, editorial resources, content marketing aids, and tools to protect your content from plagiarism. Most of these tools are free.

Content Tools

Yahoo! Style Guide. Yahoo! Style Guide covers grammar and punctuation plus a multitude of topics with a web-specific focus: writing and editing for an online audience, techniques for streamlining copy, basic web codes, Internet law, search engine optimization, and more. Price: Free.

Associated Press Stylebook. The AP Stylebook is the writing style guide for journalists. It provides fundamental guidelines for spelling, language, punctuation, usage and journalistic style. It is the definitive resource for professional journalists. Price: $26/year.

Quora. Quora connects people with what they want to know about. Find great content ideas from common questions people are asking. Price: Free.

Übersuggest. Get keyword ideas with Übersuggest, the free keyword suggestion tool that makes use of Google Suggest and other suggest services. Use the keywords to get inspiration for your content, or to optimize your pay-per-click campaigns. Price: Free.

Google Keyword Tool. If you want your content to attract searches, you need to use strong keywords in your titles and text. Google AdWords Keyword Tool is a great way to get keyword ideas and find the best text for your audience. Identify what words or phrases will drive the most traffic to your site. Price: Free.

Trapit. Explore any subject and Trapit gives you the most relevant spam-free content from around the web. Trapit learns from your thumbs up or down, improving your results over time. Price: Free.

Google Trends. Google Trends give you popular search terms. Compare trends for multiple search terms. Take advantage of trends in your keyword campaigns and content. Price: Free.

Google Alerts. Google Alerts are email updates of the latest relevant Google results — web, news — based on your queries. Aggregate content on a subject, developing story or industry. Google Alerts can ensure your own content is timely. Price: Free.

Trello. Trello is a collaboration tool that organizes your projects into boards. In one glance, Trello tells you what's being worked on, who's working on what, and where something is in a process. If you are working with others or just need to visualize your own project, Trello is a great tool to track your content development. Price: Free.

GatherContent. GatherContent is another tool to better manage your web content projects. Organize your content with drag and drop. Track changes and see revisions. Structure specific rules and guidelines for your content. Get content you need from your team. Export content to your CMS. Price: $24/month for 5 active projects.

InboundWriter. InboundWriter helps you identify popular topics and performs automated keyword research, extracting key chatter, articles, influencers and content across hundreds of web sources. Follow content optimization best practices through an easy to use tool and helpful tips for word choices, content structure and other criteria. It will even rate your effectiveness as you write with real-time content scoring. Price: Free up to 4 documents per month; $40/month up to 15 documents.

IWriter.com. If you are unable to write your own copy, IWriter.com provides freelance articles from 150 to 1,000 words in length. Request articles to be written on any topic. Pay only when you approve an article. Price: Articles start at $1.25.