InviteRobot VS SlimPay

SlackPass - Subscription access to anything with Slack

Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.

Quorum - Quorum provides tools to create outreach efficient, effective and people-centered field actions.

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.

Magik for Slack - Magik enables founders, marketers & community builders to create the community experience they never knew was possible.

Zuora - Zuora creates cloud-based software on a subscription basis that enables any company in any industry to successfully launch, manage, and transform into a subscription business.