Philips Hue, still not working with ST without Hue hub?

[JDRoberts]

It is better to use the hue bridge for the reasons in the following FAQ:

FAQ: Do I need the Hue Bridge/Hub to Use a Hue Bulb with SmartThings?

Yes. The only officially recommended way to use Hue devices with SmartThings is by using a Hue bridge. There are several reasons to use the bridge. Other Integrations There will be a number of other integrations available to you which you may want to take advantage of. Use of Hue Scenes you will be able to activate scenes created with the official Hue app, which at the present time offer many features not available in the smartthings scenes feature. Even just the ability to blink the lights. The easiest way to access scenes from the Hue app is through the following custom edge driver or IFTTT, but there are other ways as well. [ST Edge] Philips Hue LAN [BETA] (3rd Party Driver, Not ST Native) Not using the Bridge can mess up your zigbee network the most important really is …

But there are some community members who are using it pair directly.

As far as zigbee alternatives, Cree Connect, Osram/Sylvania, and Sengled can all be directly connected. Sengled don’t repeat, but for that reason they will not mess up your zigbee mesh either.

See the official compatibility list:

https://www.smartthings.com/products/-/filter/categories/lighting-and-switches