Rated 4 out of 5 stars

This looks like a very promising replacement for gcontactsync. Thank you for your work on this.

Thank You very much!

Rated 1 out of 5 stars

It requires an in depth knowledge of Google Cloud Platform and API's & Services. The instructions are poorly laid out and not matching what you find on the API & Services screen. This is probably Google's fault as they are constantly changing things and many developers find their instructions out of date rather quickly. But as it is, it is impossible for me to configure.

Thanks for Your review. I appreciated Your criticism and rewrote the steps in the howto (https://github.com/zanonmark/Google-4-TbSync/wiki/How-to-generate-your-own-Google-API-Console-project-credentials), which now is also full of screenshots and should be much more clear.
Could You please try and tell if everything seems easier?

Thanks,
MZ

Rated 5 out of 5 stars

Finally, there is a replacement for gContactSync. Thank you very much !!

Thank you very much. It's still under development and will be partially rewritten in a few weeks when TbSync will be ported to the new WebExtension API. At the moment you'd better use it in read-only mode.