Apollo.io seems popular for cold email. Source: 6 months ago

FAAANGM + ATlassian/Uber and similar product based companies 85 lacs - 1.1 cr Startups like coinbase / apollo.io / rippling 80+. Source: 8 months ago

Their data seems pretty good and their features are awesome, but they had a couple of glitches this week that are annoying me. I know they seem to be the best, but has anyone bested them yet? Curious if there's anything out there that's better than Apollo.io. Source: 10 months ago

Tons of options: apollo.io is popular and affordable. If you're looking for recently funded company contact info, saasydb.com is good. Source: 11 months ago

I agree with most people here in that its invaluable. Especially when paired with some other tools like apollo.io and autobound.ai. Source: 11 months ago

Ipstack - Locate and identify Website Visitors by IP Address. - Source: dev.to / 4 months ago

Looking to enhance your website or application with location-based services? Look no further! ipstack's Geo Lookup API is the perfect solution for seamless and accurate geolocation data retrieval. With this Free Geo IP API, you can easily obtain vital information about your users or customers, such as their country, city, latitude, longitude, time zone, and more. ipstack's API is renowned for its reliability and... Source: 10 months ago

Not really their fault. I think they mostly use https://ipstack.com/ for IP Geolocation API - their support is not the best when it comes to updating IP info. Source: 11 months ago

I had to contact https://ipstack.com/ / http://co.apilayer.net/ 5 or 6 times until they corrected the database, and Azure Sign-in logs started showing the correct details. Source: over 1 year ago

There's even a free API: https://ipstack.com/ Does seem to be less accurate than the source mylocation.org uses, as ipstack seems to think my ipv6 address is in Mons, while mylocation sees my ipv4 address as Leuven-area (which is correct). Source: over 1 year ago