Hey guys, I'm about to start a web development phase for a current IM project. I plan on coding the website myself using mostly NodeJs, AngularJs, HTML, SASS, Google Sheets Database. By doing this I won't have some luxuries many IMer's get from some SEO related WP plugins and I am unaware of open-source libraries/api's/online services that may help with my sites SEO. For example, I know a lot of people use Yoast for SEO on Wordpress. Anybody have recommendations for some Yoast type alternatives for a person developing his own standalone website? I'm mostly interested in features like seeing what your website pages will look like in the SERPs and the Content Analysis Feature.