G2: compare business software through user reviews
A free-to-browse marketplace of software reviews, with category rankings, G2 Grid charts and comparison pages for checking vendors and competitors.
Mobbin: study real app screens and flows before you design
A searchable library of screens from shipped apps and websites. A free account gives limited access; flows and search need a paid plan.
Product Hunt: track new products and how launches land
A daily showcase of new tech products with upvotes, comments and category pages. Free to browse, and useful for spotting competitors early.
