Site Search 360 is a great alternative to the retired Google Site Search.
Features include search suggestions, blazingly fast results, dictionary support, Google Analytics and tag manager integration, mobile ready, fast automatic crawling, content grouping, support for 19 languages, and search analytics.
After testing multiple site search providers this seems to be the best choice for my upcoming project.
Pros:Easy to integrate
Fast
Free plan (+2 weeks trial)
Many configuration options
Cons:Branding in free plan
Use it and profit!
Pros:Just overall better than google. Super fast and very accurate results and amazing costumer support!
Cons:Advanced customization and implementation a bit tricky.
World News API
using it as search suggestions on https://spoonacular.com
Pros:Super easy to use
Great customer support
Cons:advanced configuration requires a bit more tech knowledge