Microsoft 365 Business - Microsoft 365 Business is free for nonprofits for up to 10 user; including Excel, Word, PowerPoint, One Note, Access and OneDrive for Business.
G Suite - Google provides access to G Suite Basic, using your nonprofit's domain, at no charge. They also provide access to Google Ad Grants $10,000 of in-kind advertising every month for text ads.
Salesforce - Salesforce, a customer relationship management (CRM) software will donate 10 subscriptions for their Lightening Enterprise Edition & Nonprofit Success Pack to eligible nonprofit organizations.
MailChimp - Mailchimp is free for small nonprofits with up to 2,000 contacts and 12,000 emails per month. They offer a 15% discount to nonprofits for their paid subscription with the opportunity for a 10% security discount.
Social Media Tools Canva - the basic platform is free, there is a charge for the pro version
Hootsuite - the free version allows you to schedule content across multiple social media platforms TweetDec - Schedule and post tweets, free