CRM system like Bitrix24 but foreign analogue - what are there?

Question

Bitrix24

Good day! Of course, I'm happy with the functionality of Bitrix and the possibilities of integrating telephony, forms, emails, and so on.... but the system is not stable, buggy... -50) and so on. The developers suffered some kind of crap drawing this flying, blue helper turd, instead of finalizing the functionality ... yes, some PPC in general. Let it be indexed and hang in search engines, and people will immediately understand what kind of PPC awaits them. I tried to close my eyes to MANY BUGS, which are compensated by the functionality ... and so far on the free version, but the free version is clearly not enough and IF THIS IS FOR SALE for money .... I have no words.
I wanted to ask, maybe you know systems similar in functionality, either Russian or foreign, that allow you to:
1. integrate your telephony, for example zadarma
2. bind your e-mail domain
3. there are forms for the site You can via email)
Here are the main desires. Preferably - English, because. I am in the EU.
Thank you!

Answer 1

most advanced: salesforce.com