Ubersuggest is a free SEO tool that specializes in generating new keyword ideas. Originally founded as a tool that scraped Google Suggest terms, Ubersuggest was recently acquired by entrepreneur Neil Patel, who has since expanded the feature set significantly.

Crawly is a tool that crawls your web applications to find out broken pages to help you to maintain it. Crawly has a powerful alerting system that if any page of your project is broken, you will get a notification. Crawly also offers you to monitor your all pages of your application in historically.