Disclaimer: This is not a sponsored post or advertisement
Google has a remote software that is relatively unknown compared to big names like Zoom, Teamviewer, Cisco Webex etc.
It is called Chrome Remote Desktop.
It is usable on a Computer and also Andriod/IOS devices.
You will need a Gmail Account and Chrome browser to use it.
Go to https://remotedesktop.google.com/ on your Computer, where you will be prompted to install a extension for Chrome Remote Desktop.
Follow the onscreen instructions, and within a few minutes, you are able to access your Computer remotely via an Andriod/IOS device with the Chrome Remote Desktop app signed into your gmail.
Or you can generate a code that can be given to another party to access your computer remotely (for example, to do remote support).
I have tried it for personal use, and it have good basic remote features and quick to setup.
However, I believe they do not seem to have a built-in chat, nor file transfer.
It may not be feature-rich like other more expensive full-blow business remote software, but for accessing your own devices on-to-go or sharing a screen with another person, it is a free tool that is great and easy to use.