Ask HN: How to find right services/products to use in a startup?

Hi everyone,

I have been on Hacker News for the past 8 months and have seen numerous technology products ( for eg. getstream.io recently got featured) which can help a startup to complete the a product in very less time.

The problem I face is that its very difficult to get to the right service/product when one starts developing.

Is their a proper way that you guys follow to search for these technologies or you just save them in pocket/bookmarks/evernote for future reference?

I know there are some lists which are maintained of Github/Reddit but there are very generic and mostly about free services.