There are many categories of systems, we have a set of solutions that we recommend for startups and small businesses. Listed below are our top pics for different categories, sometimes with a runner up.
Everything you need in a CRM system, with affordable pricing and a very simple overview of your current potentials (pipeline).
See: https://www.pipedrive.com/taf/ecomerc2413083 (with this link you get an extended 30 days trial instead of the normal 14 days)
Online Phone System
The most affordable and simple online phone system, based in the UK, they do on request provide international phone numbers. Additionally the have clients for most platforms. Also integrates with Pipedrive CRM.
Does not support SIP endpoints
See: http://www.circleloop.com/?r=84LW2L (With this link you get one user free for 30 days)
Runner up: Phone.Systems
Extremely flexible phone system, very affordable. Phone systems provide a call center, IVS and SIP endpoints. However does not integrate with Pipedrive CRM, yet.
Online Support Portal
We have tested so so so many of these, that we may need to create a complete write up of the differences, the space is so extremely crowded.
Supports multiple brands under one system, supports public feedback (forums). Ticket system. Knowledge bases.
Free with all important features, integrates nicely with Sirportly and Pipedrive through email forwards.
The most configurable and customizable platform to integrate cloud systems, also cheap and powerful. Simple to use for simple scenarios.
Social Media Management
Very good pricing compare to feature set, integrates with all major social media platforms, unfortunately not integrated with Instagrams API (yet). Has a queue system for team members to submit posts for approval.