Smart Plug

Easy to use, small footprint

These arrive pre-flashed with Tasmota, and are really easy to use and to integrate with Home Assistant etc. I use them to control lights, heating elements etc. The unique selling point for me is the size. Other vendors' plugs tend to be bulky, whereas these will fit into extension leads etc without problem. I contacted the seller once, about flashing a custom-built Tasmota firmware. They were very helpful.

Open source!

I really like that they come with open source software - instead of vendor locked software. Although it would be great to have a newer firmware version (-1 star).

These are perfect. Once an MQTT service is set up in Home Assistant and the sockets are given the address and password, they just work. I've never had an issue with them, and they are my go-to for new smart sockets.