I hope there are any but I doubt it. The question comes more often so there is a market. But still, for that the manufacturer cannot use the standard power strip internal design but needs to separate the power feed to the sockets. That is more expensive, which makes them a harder sell. A design more similar to classic power strip is simply easier to manufacture.
I found a Ledvance Smart+ powerstrip for 10€.
It has power monitoring and power on/off separately on each of the 230V outlets.
The USB share the power monitoring and power on/off.
It can be controlled by the LocalTuya integration.
I will not recommend it though, but that is only because I hate all Tuya.
The product seems okay though.
The diy solution is surely viable for a local lab where in case of any problem you can switch the power to another source in case of failure.
You may want to buy a spare Shelly just in case.
For unattended situations I suggest the use of a (fairly highly priced) metered and remote controlled PDU.
i am totally agree with you, but since I will use it for my home rack it will not be a problem if for an hour or two the “servers” will been off.
Anyway I already have another shelly 4pm to measure the for “sections” of my studio/homelab and it works without any issues so it is very reliable.
I am use it just to measure the power so I will not worried about sticky relay etc, if something goes wrong I have a thermal breaker for each exit and a differentials before the shelly
If you don’t have high loads, you could even fit two shelly 2pms inside some power strip.
If you remove the internals of the 5th socket and the switch, likely you fit shellies there. At least I managed to fit Esp dev board, 2-ch relay module and some sensors to similar strip…
Most (especially cheaper) power strips use a set of two continuous metal strips going through all outlets (kept in place by plastic prongs), you generally can’t cable them up individually - and cutting the strips/ soldering cables will affect their stability and spring-like behaviour to graps the plugs. It’s quit unlikely to work out, not that most newer power-strips could be opened ‘neatly’ in the first place (glue, plastic clasps, rivets, etc.).
Some older (high-priced) 19" rack power-strips might actually have individual power sockets (and maybe even enough space in the case for esp32 && relais), but identifying those is the real challenge.
I received the Sonoff switches. Two can be put into a standard US outlet but they take up too much space for a power strip. At every other outlet, 3 for a vertical power strip and 2 for a horizontal.