WhoAPI vs ipstack: What are the differences?

Developers describe WhoAPI as "WHOIS data in XML & JSON formats. Check domain availability, advanced whois output, easily parsed with any language using API". API that delivers parsed whois, website screenshots, DNS zone information, domain availability information, PageRank and Alexa rank, email blacklist information, SSL certificate information. On the other hand, ipstack is detailed as "Locate and identify website visitors by IP address". Locate website visitors for free using ipstack - a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.

WhoAPI and ipstack belong to "IP Address / WHOIS API" category of the tech stack.

Some of the features offered by WhoAPI are:

• domain availability
• parsed whois
• website screenshot

On the other hand, ipstack provides the following key features:

• Know where your customers access your website from and customize user experiences based on IP
• The API covers over 2 million unique locations in more than 200.000 cities around the world
• Years of partnership with large ISPs ensure accurate and consistent data any day of the year

ipstack is an open source tool with 4.66K GitHub stars and 761 GitHub forks. Here's a link to ipstack's open source repository on GitHub.