LIFX makes a range of smart, Wi-Fi-enabled light bulbs.

LIFX Wi-Fi enabled LED smart lighting. Connect your lights with IFTTT, Amazon Alexa, Samsung SmartThings, Apple HomeKit, Flic, Nest, Google Assistant and more. Control your lights via iPhone and Android devices.

LIFX

Tech

Great product that works right out of the box. The App is easy to use and there are so many different variations of colors you can do from your phone. You can also control all of the bulbs right from your phone without having to set up a central hub like the Philips Hue.

My favorite smart lights! No hub needed, simple installation, and great app!

Integration with Apple Homekit is sometimes hit and miss. Often when setting a scene, it will need to be activated multiple times before all of my lights update to the correct color and brightness.
The LIFX app underwent a radical redesign a few years back - this was definitely a backwards step in terms of usability. 

I've slowly been filling my home with LIFX bulbs over the years. They're significantly better than Philips Hue when it comes to brightness and the vividness of their colors. Another neat benefit is that they don't require a hub, they work directly through WiFi. The installation process is relatively straightforward, and the app is pretty full-featured.

LIFX reviews