Alternative products to Killbill

Killbill

Open source subscription billing & payment platform

2 alternative and related products to Killbill

SlackPass

Subscription access to anything with Slack

Benjamin Powell- Founder Adsoup.com & Startup Infomaniac
Could be a solution, charge to join a channel where you update files? Not quite what you want but may be a work around.
4 Alternatives to SlackPass
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