I've been hooked on some Google services since 2010 when I got a Nexus One phone. I liked the calendar and contacts because they were accessible from my other

I've been hooked on some Google services since 2010 when I got a Nexus One phone. I liked the calendar and contacts because they were accessible from my other devices. I ported a few of my phone numbers to Google Voice shortly afterward and I liked being able to access voicemail and SMS from my other devices. Sometime last year I noticed that Google Calendar was acting up with Thunderbird so I decided to migrate my calendar and contacts to Owncloud (https://owncloud.com/ https://owncloud.com/). That migration went very smoothly and I've had no trouble accessing my contacts/calendar from desktop, Android, and iOS. Everything works great, and Thunderbird no longer has problems. To get completely off of Google's tit, I need to migrate my Google Voice to something else. I can migrate them to NumberBarn, but that doesn't take care of the spam filtering. Maybe I can use NoMoRobo...