AlphaRank is a full-featured SEO tool that uses machine learning and proprietary algorithms to offer precise semantic analysis. It includes access to a database of more than 100 million keywords, real-time keyword ranking monitoring, and site audits. That makes it good for everyone from enterprise companies to freelancers who want to increase traffic and reach the top 10.
If you prefer a more intuitive interface, Niche Finder is a simple market research tool to find profitable niches and analyze competitors. It includes keyword research, website traffic data and competitor analysis. It's good for professionals like SEOs, marketers and writers who want to track market trends.