Martechbase - A searchable database of 7,000+ marketing tools
Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
Grouparoo - Open source app to sync customer data with 3rd party tools
Keyword Insights - Save hours doing keyword research
The Music Industry Toolkit - The Music Industry Toolkit is a curated collection of tools and resources to help music artists & producers level up their music career.
SEO Book - Learn SEO: An on-page SEO tutorial