Salesforce is a great tool. It is very good to have an administrator on staff that can keep the company updated about new features and set guidelines on how to use it for the rest of the staff.
Slack fits very well with our family-like work culture and facilitates communications with our remote team. With all these communication tools, you have to set guidelines on the way to use them.
Adobe CC helps our creative team collaborate and create useful, imaginative content for the whole organization. Everything from education and apprentice program handouts to photo editing and social media collateral is created in Adobe's suite of software for design and publishing.
We use Eventbrite for scheduling larger events for LaunchCode, and checking in guests as they arrive to the Mentor Center.
MailChimp is fantastic--it integrates with many of our other tools to help us better communicate with our students, candidates and company partners with compelling content tailored to their needs.
We are on the LinkedIn Premium service that allows us to connect with companies, community partners and with reporters. The premium version lets you see people's contact info and it is great for lead generation.