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   * [Diggernaut](https://www.diggernaut.com/) — Cloud based web scraping and data extraction platform for turning any website to the dataset or to work with it as with an API. Free plan includes 5K page requests monthly.
   * [Colaboratory](https://colab.research.google.com) — Free web-based Python notebook environment with Nvidia Tesla K80 GPU.
   * [tamber](https://tamber.com) — Put deep-learning powered recommendations in your app. Free 5k monthly active users.
+  * [IPinfo](https://ipinfo.io/) — Fast, accurate, and free (up to 100k/month) IP address data API. Offers APIs with details on geolocation, companies, carriers, IP ranges, domains, abuse contacts, and more. All paid APIs can be trialed for free.
   * [IP Geolocation](https://ipgeolocation.io/) — IP Geolocation API - Forever free plan for developers with 30k requests per month (1k/day) limit.
   * [RequestBin.com](https://requestbin.com) — Create a free endpoint to which you can send HTTP requests. Any HTTP requests sent to that endpoint will be recorded with the associated payload and headers so you can observe requests from webhooks and other services.
   * [MailboxValidator](https://www.mailboxvalidator.com) — Email verification service using real mail server connection to confirm valid email. Free API plan has 300 verifications per month.