Ghost is a blogging platform written in Node.js. It is fairly popular and a direct competitor to WordPress. Ghost also has a pleasing aesthetic.
So much so, that WordPress.com, a commercial entity, decided to take their default theme and use it. Without permission and explicitly breaking the licensing terms. OMG, evil corporation taking advantage of the organic artisan developer!
YouTube is the undisputed video platform for the web. Back in 2005 when it launched it revolutionized online video with Flash (yes, that Flash) and was acquired by Google in October 2006.
Casual video viewers as well as amateur and professional content creators, everybody uses YouTube. From Flash to HTML5 video the technology has evolved. Now YouTube going for Web Components.
Angular, React and Vue.js are three popular technologies that are widely deployed and used for creating rich user interfaces for web applications. They're all somewhat of competitors, but at the end of the day they are all comparable and none holds a significant advantage.
Dgraph, a very ambitious project that aims to match together an advanced Graph Database and a GraphQL API. For database projects especially, stability and adoption are key.
There are only a handful of popular databases in each category, and for GraphQL powered DBs, there is still no gold standard. Dgraph could be it.
The next version of the most popular server side language powering the Web, PHP is scheduled to receive a Just In Time (JIT) compiler in its next major version.