[stadeschuldt]

Here has a freemium tier (no credit card required) which gives you 250k transactions per month for free.

https://developer.here.com/pricing

Disclaimer: I work for here.

[bruce511]

Plus one for this. I created a wrapper in the language I use for HERE maps, and their fremium model is great. Over 250K I start paying, but I haven't got there yet. I'm using routing, address auto-complete (International), tiles, traffic maps and so on.