G Suite (formerly Google Apps) - basically Gmail for nonprofits, but also including document storage, collaboration, simple websites, forums, online surveys, and photos - Free

Google for Nonprofits is a set of resources from Google for access to Google Apps, ad-free YouTube, and credits for search advertising - Free

TechSoup provides free software and discounted hardware for 501c3 nonprofits - Free

WordPress - our website development tool of choice: widely used, easy to learn, flexible powerful - Free

EventBrite - for doing event tickets or volunteer sign-ups - Free

MailChimp - for mass emails and e-newsletters - Free

Flickr - online photo storage and automatic slide shows - Free

WooCommerce - online store feature for WordPress websites - Free

Network for Good - online donations that are easy to configure

Facebook - important organization pages for marketing, outreach and donations - Free

Twitter - for marketing and outreach

HootSuite - provides central dashboard for managing all social media in one place

PayPal - provides the lowest transaction costs for credit card processing for nonprofits