UniBee

UniBee is an open-source subscription-billing engine that deletes the word “expensive” from SaaS finance. Written in blisteringly fast Go, it ingests 10 000 webhooks per minute, supports 30+ gateways (Stripe, PayPal, BTC, ETH), auto-invoices 120 jurisdictions and exposes live MRR dashboards. Self-host for zero revenue share or tap the managed cloud; either way you pocket the 2-4 % FX fees that Paddle quietly skims. Migrate in hours via Docker, slash OPEX overnight and scale to $100 M ARR without rewriting a line.

In a public case study on the UniBee homepage, Nodemaven CEO Stan Sadokov reveals that migrating from a legacy stack to UniBee reduced monthly billing expenses from $4 900 to $1 560 within 60 days—while increasing payment success rate from 89 % to 96 % thanks to intelligent retry schedules and crypto options for privacy-minded clients. The self-hosted deployment also satisfied the company’s SOC 2 auditors because no customer data ever leaves its VPC.