So you’re talking online services or are you happy to sync locally?
In my opinion you cant go past FreeFileSinc. Which a few of us endorsed in your Macrium thread. It also contains RealTimeSync which will do what you’re wanting, it can backup files upon detected file change either immediately or at a delay of your setting.
If you click on “Tutorials” on their website front page, they have some great short videos which will give you a good idea of what FreeFileSync & RealTimeSync can do (mirror/oneway etc)
It doesn’t backup to the cloud though.
Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
Motherboard
ASUS ROG Maximus VI Formula
Memory
32.0 GB of I forget and the box is in storage.
Graphics Card(s)
Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
Sound Card
Onboard
Monitor(s) Displays
5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
Screen Resolution
All over the place
Hard Drives
Too many to list.
OS on Samsung 1TB 870 QVO SATA
PSU
Silverstone 1500
Case
NZXT Phantom 820 Full-Tower Case
Cooling
Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
My favorite free file syncing app is FreeFileSync. It's loaded with some fantastic features. An example of one that I love:
Say you sync folders that have some large files, like Windows ISO images. You rename one of those files. FreeFileSync is mart enough to recognize that the file is the same, only the name changed. As a result, rather than copy the file over again, it can simply rename the file on the destination, saving much time.
64GB (Waiting for warranty replacement of another 64GB for 128GB total)
Graphics Card(s)
No GPU - Built-in Intel Graphics
Sound Card
Integrated
Monitor(s) Displays
HP Envy 32
Screen Resolution
2560 x 1440
Hard Drives
1 x 1TB NVMe SSD
1 x 2TB NVMe SSD
1 x 4TB NVMe SSD
3 x 512GB 2.5" SSD
1 x 4TB 2.5" SSD
5 x 8TB Seagate Barracuda HDD
PSU
Corsair HX850i
Case
Corsair iCUE RGB 5000X mid tower case
Cooling
Noctua NF-S12A chromax.black.swap case fans (Qty. 7) & Home Computer Specifications, Configuration, and Usage Notes General Specifications ASUS Prime Z590-A motherboard, serial number M1M0KC222467ARP Intel Core i7-11700K CPU (11th Gen Rocket Lake / LGA 1200 Socket) 128GB Crucial Ballistix RGB DDR4 3200 MHz DRAM (4 x 32GB) Corsair iCUE RGB 5000X mid tower case Noctua NH-D15 chromax.black CPU cooler Noctua NF-S12A chromax.black.swap case fans (Qty. 7) & Corsair LL-120 RGB Fans (Qty. 3)
Keyboard
Corsair K70 Max RGB Magnetic Keyboard
Mouse
Logitech MX Master 3
Internet Speed
1Gb Up / 1 Gb Down
Browser
Edge
Antivirus
Windows Defender
Other Info
The five 8TB drives and three 512GB SSDs are part of a DrivePool using StableBit DrivePool software. The three SSDs are devoted purely to caching for the 8TB drives. All of the important data is stored in triplicate so that I can withstand simultaneous failure of 2 disks.
Networking: 2.5Gbps Ethernet and WiFi 6e
Operating System
Win11 Pro 23H2
Computer type
Laptop
Manufacturer/Model
Lenovo ThinkBook 13x Gen 2
CPU
Intel i7-1255U
Memory
16 GB
Graphics card(s)
Intel Iris Xe Graphics
Sound Card
Realtek® ALC3306-CG codec
Monitor(s) Displays
13.3-inch IPS Display
Screen Resolution
WQXGA (2560 x 1600)
Hard Drives
2 TB 4 x 4 NVMe SSD
PSU
USB-C / Thunderbolt 4 Power / Charging
Mouse
Buttonless Glass Precision Touchpad
Keyboard
Backlit, spill resistant keyboard
Internet Speed
1Gb Up / 1Gb Down
Browser
Edge
Antivirus
Windows Defender
Other Info
WiFi 6e / Bluetooth 5.1 / Facial Recognition / Fingerprint Sensor / ToF (Time of Flight) Human Presence Sensor
Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
Motherboard
ASUS ROG Maximus VI Formula
Memory
32.0 GB of I forget and the box is in storage.
Graphics Card(s)
Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
Sound Card
Onboard
Monitor(s) Displays
5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
Screen Resolution
All over the place
Hard Drives
Too many to list.
OS on Samsung 1TB 870 QVO SATA
PSU
Silverstone 1500
Case
NZXT Phantom 820 Full-Tower Case
Cooling
Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.