Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
Tech To The Rescue - Tech Companies helping NGOs fight COVID-19 crisis for free
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
AidTable - Crowdsourced list of discounts to help you during COVID-19
Recurly - Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.
SaaS for COVID - A directory of discounts on popular SaaS companies