Nectar

Invoices, line by line.

Plans, seats and usage become invoices where every line shows how it was calculated.

100% free, open source alternative to Stripe Billing, Chargebee and Maxio

Run Nectar Read the docs

Free and open source, MIT licensed.

Usage

Northwind Robotics

3,346,778.5 events

JULY

Rated

Core plan$499.00
5 seats × $30.00$150.00
3,346,778.5 × $0.0004$1,338.71
Tax 8.25%$163.99

Issued

Invoice INV-000042

Issued

$2,151.70

MIT License

Permission is hereby granted, free of charge

100% free.

Nectar is MIT licensed: run it, change it and keep every record.

Charges

ChargeQuantityUnitAmount
Event processing (v1)3,346,778.5 events3,346,778.5$0.0004$1,338.71

Rule

sum of event quantities × unit, rounded half away from zero once

Every charge has a reason.

Open any line to see the rule, quantity and price behind it.

July 2026 bill run

Invoices
24
Total
$48,310.25
vs June 2026
+$1,204.10

Exceptions

No exceptions. Every draft rated cleanly.

Approve clean drafts

The whole month on one page.

Each bill run drafts every invoice, compares it with last month and lists anything unusual.

Shadow and cutover

Northwind RoboticsReconciledAdopt

Previous biller agrees on every price.

Try it beside Stripe.

Bring in your Stripe Billing records, and Nectar rates them in shadow and compares every price before you switch.

CustomerNot yet due1–30 days31–60 daysOwed
Pinecrest Labs$273.65$1,151.70$0.00$1,425.35

Draft reminder

Know who owes what.

Ageing by customer, payments with their reference, and reminders ready to send from your own mail.

Also included.

Invoices, line by line.

Run Nectar Read the docs