Typesense - Typo tolerant, delightfully simple, open source search 🔍
cutestat - Website Stats and Valuation. CuteStat.
Expertrec - Adds super fast search autocomplete, spell correct and search listing pages to your site search.
Rankchart - Rankchart is one of the unique websites that allows you to examine your websites or watch competitors and locate rich information about website technologies, site reputation, errors, SEO, and ad-word recommendations.
Appbase.io - Search stack for building modern apps
Site Worth traffic - Site Worth traffic is a cost-effective site that is introduced to estimate the value, daily page views, daily visitors, and daily revenue of a website.