Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!

nominated

Get user geolocation, crawler, browser, operating system, and device names using real-time, lightweight JSON response user agent parser, and ip lookup API.

nominated free $5.59 / Monthly (Personal 50K API call/month)

Automate your workflow from idea to production.

nominated Open Source

Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.

nominated

speed.cloudflare.com is a tool that allows you to measure the speed and consistency of your connection to the Internet. You can use it to verify that the speed your ISP promised you is the speed you are getting.

nominated Open Source