Angelina Fabbro introduced this tool on a Web developer conference in Hungary [1] a couple of days ago. Here is a short summary as far as I can recall:<p>- a couple of decades ago alert() was used by pretty much everybody for debugging, even her :) [2]<p>- most of the developers use(d|s) Chrome for web development<p>- this is the first serious dedicated tool for web developers which is not just a browser plugin<p>you don't have to close a million tabs during development<p>- they worked together with the Firebug team, there will be no duplicate functionality in the plugin and the browser<p>- seamless Firebug integration. You can switch between Firebug and default theme, it will not break your workflow<p>- NOT a new browser which you have to support, same engine as in Firefox, nothing new or special about it<p>- multiple profiles<p>- developer friendly default settings like enabled experimental CSS features, etc.<p>- UX improvements for changing config, like switches for features, so you don't have to dig about:config<p>- support debugging Android, even the iOS simulator or attached device real time<p>- the dev team is really looking for feedback, they want to make web developers' life easier and put in features based on feedback<p>- there will be no built in REST API tester tool like Postman REST Client at first, but I was not the first dev who asked for it, so they will consider it for sure<p>- it will replace the firefox dev channel<p>- themeable<p>- much stable than nightly, but you can try out experimental browser features, so it's a good compromise<p>[1]: <a href="http://instagram.com/p/vIiNp_vRXD/" rel="nofollow">http://instagram.com/p/vIiNp_vRXD/</a><p>[2]: <a href="https://twitter.com/hopefulcyborg/status/530033632636055552" rel="nofollow">https://twitter.com/hopefulcyborg/status/530033632636055552</a>