Embroker
They are a startup, built for startups so they designed their program to meet the specific needs of early venture-backed companies. They are a service broker, so it will be more expensive.
The Hartford
A traditional provider that has rolled out new policies to enter the startup market. Since they are a bigger company, they like to add value with basic business needs. The Hartford writes insurance and does brokerage, so they could be cheaper than other places.
Founder Shield
Unlike Embroker, they aren't using technology services to run their business but they are focused on serving startups.
Woodruff Sawyer
A solid old school insurance broker.