We have developed django crm and published in this Readthedocs
https://django-crm.readthedocs.io/en/latest/ and download code here https://github.com/MicroPyramid/Django-CRM
Feedback, bug reports, etc., are welcome.
I have been using it for about 20 mins now so not a lot of time to give effective feedback. I like it so far and also hope that you more Django >2 version soon.
Good luck with on this and I will raise a bug report on GitHub when I find one. So far I like it and would love to contribute to resolving a few of your reported bugs in future.
Thanks for this.