Known by some as the “second Silicon Valley,” Stockholm's unicorns have brought a lot international attention to their doorstep. Since Startup Guide's last (and first) Stockholm edition, the Swedish capital has certainly matured.

With investment pouring in at record levels over the past couple of years, reaching $1.4 billion in 2016, it's unsurprising that companies such as Skype, Klarna King and Mojang, which all started out as small Swedish startups, have gained international status as billion dollar juggernauts.

Looking to immerse yourself in Stockholm’s emerging startup scene? We’ve put together a list of the Stockholm startups that you should definitely keep on your radar. All of the startups are featured in our Startup Guide Stockholm Vol. 2 book, should you want to read more about them.

Airinum aims to empower individuals to breathe clean air by offering innovative products that intersect functionality and design, catering to urban citizens all over the world.

Amuse is a record company for the current artist’s needs. By offering free music distribution to independent artists around the world, it aims to change the music industry for the better.

Gleechi develops software solutions to enable hand interaction between humans, computers and robots. It aims to go beyond gaming services, and implement its technology to virtual training environments and healthcare.

Hi Henry is an employee-experience platform that enables companies to take better care of their employees from onboarding to exit. Its AI-powered office assistant, Hi Henry, is designed to make life at work easier and more productive.

Mentimeter aims to give every audience a voice and turn all presenters into superstars, by created an easy-to-use software that enables interactive presentations and increased audience engagement during presentations.

NuvoAir combines beautiful hardware and data-collection software to improve the lives of people suffering from respiratory conditions and to streamline clinical decision making.

Stilla aims to give you peace of mind for your belongings. The Stilla Motion unit gives you an instant notification via your phone if something moves when it shouldn’t. Drop it inside your backpack or place it on top of a purse or anything else you want to protect. It keeps your valuables and loved ones secure.

United Invitations connects natives and newcomers over home-cooked dinners in countries all over Europe, in an effort to foster community and create a more open and empathic society.

Watty’s mission is about getting household energy data online and building really cool software and tools to help people make smarter energy choices and live their life in a better way.

Worldfavor is a global digital platform with the mission to enable every company in the world to be sustainable and transparent. By digitalizing sustainability information, companies can track and improve their performance, share their data and analyze other companies’ performance.

Just so you’re aware of how we selected these startups in Stockholm, we sorted through hundreds of nominations from the community before a local advisory board helped us curate the final list.

All photos: Startup Guide

*This article was originally published on October 17th, 2018 and updated on December 10th, 2018.