HubSpot

Salesforce

salesforce.com

Salesforce specializes in customer relationship management. It can easily scale to enterprise level, but is more expensive than other options.

Affinity

affinity.co

Affinity is a relationship management platform that helps you leverage relationship intelligence to expand your network, support your portfolio, and increase proprietary deal flow.

Slack

slack.com

Slack is a company collaboration tool that uses instant messaging to replace email.

Maze

maze.co

Maze is a user testing platform for capturing feedback on design prototypes.