* Good free and premium paid service
* They've gone a bit above and beyond to provide examples/demos in all languages in their docs. Super easy for users
* Can process bulk/batch request super fast in parallel on your behalf
* Have a super cool front-end CSV upload tool built in React so non-programmers can geocode data in seconds
* Forward/reverse geocoding
* Also give Census data, congressional districts, state legislative districts, and even school districts
Full disclosure: I know the husband and wife founder. Very nice people
[1]: https://geocod.io