UniBee

Open-source billing for global subscriptions, invoices, taxes, and payments
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Skip the billing tangle and start with a clean checklist. In UniBee, define what you sell—products, plans, and add‑ons—then choose how each is charged: recurring, one‑time, or usage‑based. Set meters for events you want to bill on (API calls, seats, storage) and attach the right cadence. Pick currencies for every market you serve and let the built‑in tax rules compute rates by country and region automatically. Connect your payment rails in minutes: link Stripe and PayPal, turn on card processing, and, if you need it, enable crypto. Finish by selecting an invoice template, dropping in your logo and terms, and mapping webhooks to your app so signups, upgrades, and cancellations stay in sync.

Move from quote to cash without copy‑paste. Create an estimate in UniBee, send it for approval, and convert it to a live subscription or invoice with one action. Customers can self‑serve in the portal—update cards, switch plans, download past bills—while you accept payments online, on mobile, or record cash and bank transfers for offline settlements. UniBee posts line‑item taxes, schedules reminders before due dates, and launches dunning steps the moment a card fails, emailing customers and retrying with smart rules until the charge clears. Keep your contact database organized with segments (trial, active, past due, churned) and filter any list to export, message, or bulk‑update. Invoice history is always searchable, so finance can audit changes and verify what went out and when. more

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Review summary

Features

  • Tax Calculator
  • Dunning Management
  • Payment Reminders
  • Payment Processing
  • Contact Database
  • Recurring (Subscription Billing)
  • Online Payments
  • Online Invoicing
  • Mobile Payments
  • Hourly Billing
  • Customizable Invoices
  • Customer Portal
  • Multi-Currency
  • Offline Payments
  • Quotes and Estimates
  • Project Billing
  • Invoice History
  • Contingency Billing

How It’s Used

  • SaaS startup launching tiered and usage-based subscriptions across regions
  • Consulting firm combining retainers, hourly billing, and milestone project invoices
  • Field service team accepting mobile and offline payments with instant receipts
  • Global B2B vendor issuing multi-currency invoices with automatic tax calculation
  • Marketplace charging usage fees and settling via cards, PayPal, and crypto
  • Nonprofit managing recurring donations with dunning and tax-compliant receipts
  • Education platform handling semester subscriptions plus one-time course add-ons
  • Freelance collective turning quotes into subscriptions or invoices in one click
  • Fintech deploying a self-hosted instance for infrastructure control and compliance
  • SaaS scale-up automating dunning, reminders, and customer self-service via portal

Plans & Pricing

Worker Bee

Free

Subscription plan management
Recurring add-on
One time payment
Usage-based charges
Promo code (% or fixed)
Smart Dunning
Billing webhooks
Mailing webhooks
Tracking events
PDF invoice
Credit note management
Tax management
Basic financial report
Self-hosted implementation
Admin portal
User portal
Open-source
Payment Gateways: Stripe, PayPal, Crypto, WeChat Pay, Google Pay
Integrations: SendGrid, Segment, Post Affiliate Pro
Community Support

Guard Bee

Others

Starts from €300 per month
Includes features of Worker Bee plan, plus
Real-time financial analytics
Billing admin management and hierarchy
Technical Support
Dedicated engineering team
Onboarding training for billing admins

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