Fantastic for Google Apps fans - being able to pull custom reports directly from Google Sheets is a huge bonus. Gmail integration is very good and better than any other CRM I've seen. Integration with Google Drive is also very good.
Outstanding uptime - in past 2 years not down for more than 6 hours total and most were from one session.
Deep functionality - very robust search, decent project management sub-system, 'activities' are abundant and robust.
Customization - can add custom fields all day long at no extra charge. Integration with Google sheets affords more flexibility when sharing data with customers.
This list could go on for many pages - it's a very mature, traditional CRM with tons of great features!
Like Google, they have built some amazing software but they seem to build a feature then quickly lose interest in improving it.
THERE HAS NOT BEEN ANY (ANNOUNCED) UPDATES ON ANYTHING IN 9 MONTHS. No communication since August 2015 - for a SaaS product this is inexcusable! Maybe they're working on something big but they have not bothered to tell their customers.
Contacts and Companies are linked but separate so at times this can cause much frustration trying to create lists or exporting or connecting up to simple things like Zapier. APIs are very robust BUT to make them work most will require using their APIs and custom programming hooks (i.e. expensive programmers).
Support is by email only and they are usually prompt, courteous and helpful, even when it is in the online help guides, HOWEVER, they almost never admit to the issue being a bug or due to poor design and after making DOZENS of suggestions not one has been incorporated (I'm an engineer by training and a former software product manager fyi).
Seems to be catered to Real Estate pros - if that's you and you love Google Apps for Work and don't like change, this is the system for you!
They have no public forum where people can make suggestions and vote on them .
They offer no visibility on their product road map.
Their releases / improvements are very infrequent and usually not that significant.
Their ability to embrace the various social sites like twitter, FB, even G+ which they should, but especially linkedin! is deplorable and a few social widgets they had built in their site have either been taken off or don't work hardly at all and they continue to remove those capabilities or when they break they don't update them.
Overall their integration with Google is quite good, however, the basics seem to be very thin for example synchronizing contacts with Google should be a core competency but their instructions recommend that you only push from solve360 to Google and not the other way. Unfortunately this explains why we've had a lot of issues when we also try to synchronize from Google contacts back to the CRM. They only support the default contact fields when bringing data over from Google contacts, so any of the rich data that can be collected from a lot of these contact tools out there, like their Twitter address or other email addresses and things where we might want to have custom fields will not come across.
Google calendar integration - Solve requires its own calendar, why can't it write/update our regular calendar so our free/busy tools like youcanbook me can see it? vyte.in can see it but still seems silly. Solve also requires manual sync from Google cal/tasks back to solve - ugh.
Emails created in the CRM don't show true wysiwyg - outlook users see whacky stuff that doesn't show in the CRM nor on Gmail.
There's more, but I'll stop ranting now :)