If you can mentally process a lot of opinions like a Bayesian: Hacker News search with Algolia, e.g. with more than one framework in the query. Twitter search.

If you can mentally process a lot of opinions like a Bayesian: Hacker News search with Algolia, e.g. with more than one framework in the query. Twitter search. Reddit search (via https://camas.github.io/reddit-search/ https://camas.github.io/reddit-search/). GitHub issues to see what kind of problems people are having and whether they're really showstoppers. Are they things that can be fixed, or do they reveal more-serious design problems in the software? Comparative code review in your IDE. Comparative review of documentation. GitHub search to find big projects that use those dependencies and seeing whether you like the results.