1. If you're serious about sales, you can't go past Salesforce. Pipedrive, Base, Sage and any others are all good, but you'll eventually grow out of them. In my view, you may as well start with Salesforce. You'll grow into it. It's the most flexible/customisable and has the most plugins and services to help you extract value from it.
2. InsightSquared.com for Salesforce analytics.
3. SalesLoft.com or Outreach.io for scalable sales development
2. InsightSquared.com for Salesforce analytics.
3. SalesLoft.com or Outreach.io for scalable sales development
4. LeadGenius for assisted lead gen
5. http://SpartaSales.com for sales gamification (plugs into Salesforce too)