Sensors: 511
Lights: 79
Switches: 84
Binary sensors: 112
Automations: 43
Sensors: 645
Lights: 210
Switches: 235
Binary sensors: 181
Automations: 81
automation: 81
binary_sensor: 181
button: 16
camera: 25
climate: 26
cover: 55
device_tracker: 100
govee: 1
group: 1
humidifier: 6
input_boolean: 9
input_button: 1
input_datetime: 2
input_number: 10
input_select: 3
lawn_mower: 2
light: 210
media_player: 20
number: 3
person: 2
scene: 7
script: 9
select: 6
sensor: 645
sun: 1
switch: 235
update: 37
vacuum: 6
weather: 1
zone: 2
How many is too many?
What are Home Assistant's limitation on quantity of devices and entities?
Do limitations (if any) vary according to the integration one is using?
etc.?
* automation: 77
* binary_sensor: 234
* button: 122
* camera: 9
* climate: 1
* cover: 2
* device_tracker: 27
* event: 39
* input_button: 3
* light: 94
* lock: 4
* media_player: 13
* number: 51
* person: 2
* remote: 3
* scene: 35
* script: 1
* select: 32
* sensor: 762
* siren: 39
* stt: 2
* sun: 1
* switch: 210
* tts: 1
* update: 72
* wake_word: 1
* zone: 1
Sensors: 470
Lights: 51
Switches: 148
Binary sensors: 136
Automations: 19
Sensors: 167
Lights: 24
Switches: 34
Binary sensors: 7
Automations: 28
Quoting myself after 3,5 years 
Am now at:
Sensors: 901
Lights: 49
Switches: 97
Binary sensors: 139
Automations: 76
So down 1 automation, but severe spike in sensors, switches and binary sensors. The lights have been migrate from 433mhz to all Zigbee.
Sensors: 371
Lights: 31
Switches: 48
Binary sensors: 38
Automations: 51
Sensors: 580
Lights: 5
Switches: 102
Binary sensors: 195
Automations: 158
Sensors: 1287
Lights: 45
Switches: 185
Binary sensors: 255
Automations: 100
Sensors: 125
Lights: 6
Switches: 20
Binary sensors: 27
Automations: 113
Sensors: 931
Lights: 39
Switches: 162
Binary sensors: 118
Automations: 58
NodeRED +
alarm_control_panel: 2
automation: 1
binary_sensor: 657
button: 37
calendar: 3
camera: 61
climate: 29
counter: 1
cover: 77
device_tracker: 17
event: 193
lawn_mower: 1
light: 339
lock: 2
media_player: 42
number: 248
person: 6
remote: 1
scene: 10
select: 88
sensor: 2489
stt: 1
sun: 1
switch: 344
text: 5
tts: 1
update: 15
vacuum: 2
weather: 4
zone: 1
After a while this is my list
automation: 111
binary_sensor: 135
button: 109
calendar: 6
camera: 2
climate: 1
device_tracker: 35
event: 4
fan: 1
group: 6
input_boolean: 46
input_button: 3
input_datetime: 8
input_number: 4
input_select: 23
input_text: 16
light: 76
media_player: 8
number: 17
person: 2
remote: 3
scene: 42
script: 32
select: 12
sensor: 986
sun: 1
switch: 184
time: 4
timer: 4
todo: 1
update: 29
vacuum: 1
weather: 1
zone: 13
On a rpi4, 14 addons running and ridiculous amouts of devices, still running fine (don’t forget to scroll 
):
alarm_control_panel: 2
automation: 344
binary_sensor: 677
button: 369
calendar: 8
camera: 5
climate: 17
cover: 57
device_tracker: 207
event: 102
fan: 6
group: 23
humidifier: 1
image: 7
input_boolean: 14
input_datetime: 3
input_number: 44
input_select: 3
light: 52
lock: 6
media_player: 28
miele: 1
number: 219
openplantbook: 1
person: 4
plant: 8
proximity: 1
remote: 11
schedule: 1
script: 239
select: 117
sensor: 2030
siren: 16
stt: 1
switch: 275
timer: 18
todo: 2
tts: 1
update: 206
vacuum: 1
water_heater: 1
weather: 5
zone: 32
Since 3.9.2023:
Automation 83
Binary Sensor 88
Button 56
Calendar 7
Camera 8
Climate 5
Counter 2
Cover 2
Device Tracker 27
Event 31
Group 1
Image 1
Input Boolean 9
Input Datetime 4
Input Number 13
Input Select 12
Light 91
Media Player 16
Number 3
Person 5
Remote 1
Scene 61
Schedule 1
Script 20
Select 6
Sensor 542
Stt 1
Sun 1
Switch 95
Tts 2
Update 40
Vacuum 1
Weather 2
Zone 14
Sensors: 174
Lights: 82
Switches: 32
Binary sensors: 36
Automations: 37
Got to make me a power user by now!
Sensors: 663
Lights: 25
Switches: 147
Binary sensors: 215
Automations: 119
Sensors: 399
Lights: 9
Switches: 49
Binary sensors: 39
Automations: 83
LOL, I use HA since only 3 months!