abetterrouteplanner.com
plugshare.com
Both of these have phone apps. Both of them will show you 90% of the available chargers of any brand (that's why it's useful to have both, to get the overlap. I don't really understand why some chargers are not present on both apps). You can filter the results to show only CCS fast chargers or only tesla chargers or whatever. Both of them have places to leave reviews when you do use a charger, and I recommend doing so if a charger you use has not been reviewed recently, so that other people know that it is working. (Or not working.) ABRP is tricky to use sometimes, it really wants to PLAN your route rather than giving an overview of options; plugshare just shows you everything it knows.
You should also get the individual apps of the charging companies. This is just to make it easier when you do find a charger, to invoke it by waving your phone at the machine rather than dorking around with a credit card.
It's easier with Tesla because there's only one company and they are pretty good about keeping their stuff working. The other companies are hit and miss and often you are disappointed to find a charging station broken. So when I'm driving a non-Tesla, I always identify several charging locations along my route, and I charge before I need it in case that one's broken and I need to go to the next one. Note that even if you have the Tesla adapter, not all Tesla fast chargers will accept them. In particular chargers at the Hooksett NH rest area do not.