Comparison

FOSSBilling vs Quaderno

On the evidence we track, Quaderno leads this comparison with a composite score of 60/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

FOSSBilling full profile →Quaderno full profile →

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FOSSBilling39

★Quaderno60

Attribute comparison across 2 tools
Attribute	FOSSBilling	QuadernoLeader
Vioscale score	39 / 100low · 39%	60 / 100low · 39%
Pricing
Free tierpricing.free_tier	✓	✗
Modelpricing.model	open_source	commercial
Price levelpricing.price_level	free	mid
Starting pricepricing.starting_price	-	$29
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	4	9
Security
Disclosure policysecurity.disclosure_policy	-	✓
Gdprsecurity.gdpr	-	✓
Reliability
Sla pctreliability.sla_pct	-	99.99
Status pagereliability.status_page	✓	-
Adoption
Github starsadoption.github_stars	16	-
Activity
Commits last 30dactivity.commits_last_30d	21	-
License
Spdxlicense.spdx	AGPL-3.0	-
Language
Primarylanguage.primary	Astro	-
Market
Availabilitymarket.availability	-	Available worldwide · HQ ES

Score

Vioscale score

FOSSBilling39 / 100low · 39%

Quaderno60 / 100low · 39%

Pricing

Free tier

FOSSBilling✓

Quaderno✗

Model

FOSSBillingopen_source

Quadernocommercial

Price level

FOSSBillingfree

Quadernomid

Starting price

FOSSBilling–

Quaderno$29

Transparent

FOSSBilling✓

Quaderno✓

Integrations

Count

FOSSBilling4

Quaderno9

Security

Disclosure policy

FOSSBilling–

Quaderno✓

Gdpr

FOSSBilling–

Quaderno✓

Reliability

Sla pct

FOSSBilling–

Quaderno99.99

Status page

FOSSBilling✓

Quaderno–

Adoption

Github stars

FOSSBilling16

Quaderno–

Activity

Commits last 30d

FOSSBilling21

Quaderno–

License

Spdx

FOSSBillingAGPL-3.0

Quaderno–

Language

Primary

FOSSBillingAstro

Quaderno–

Market

Availability

FOSSBilling–

QuadernoAvailable worldwide · HQ ES

Capabilities

Feature-by-feature on the axes that matter for billing & invoicing software. “-” means undocumented, not absent.

Capability comparison for Billing & Invoicing Software
Capability	FOSSBilling	Quaderno
Core
Subscription billing	✓	✓
Usage metering	-	Basic
Pricing models	-	Tiered subscription with transaction-based limits
Invoicing & AR	✓	✓
Catalog management	-	-
Commerce
Merchant of record	-	-
Finance
Revenue recognition	-	-
Tax handling	-	Native
Collections
Dunning	-	-
Integrations
GL / ERP sync	-	✓
Ecosystem
API-first / developer-first	-	✓
Deployment
Self-hostable	✓	✗
Insight
Revenue analytics	-	✓

Core

Subscription billing

FOSSBilling✓

Quaderno✓

Usage metering

FOSSBilling-

QuadernoBasic

Pricing models

FOSSBilling-

QuadernoTiered subscription with transaction-based limits

Invoicing & AR

FOSSBilling✓

Quaderno✓

Catalog management

FOSSBilling-

Quaderno-

Commerce

Merchant of record

FOSSBilling-

Quaderno-

Finance

Revenue recognition

FOSSBilling-

Quaderno-

Tax handling

FOSSBilling-

QuadernoNative

Collections

Dunning

FOSSBilling-

Quaderno-

Integrations

GL / ERP sync

FOSSBilling-

Quaderno✓

Ecosystem

API-first / developer-first

FOSSBilling-

Quaderno✓

Deployment

Self-hostable

FOSSBilling✓

Quaderno✗

Insight

Revenue analytics

FOSSBilling-

Quaderno✓

What each one is

The product in its own terms, so the numbers below have context.

FOSSBilling

FOSSBilling is a free and open-source billing and client management platform designed for hosting businesses. It provides automated billing, hosting provisioning, domain management, support ticketing, and an extensible architecture.

Independently observed

Quaderno

Leader

Worldwide tax compliance platform that automates sales tax, VAT, and GST calculations, invoicing, and tax return filing for online businesses.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

FOSSBilling

Open sourceFree tier

as of 2026-08-13verify ↗

Quaderno

Leader

from $29/moSubscription7-day trial

From $29/month. 7-day free trial.

Hobby$29/month
- International tax calculations
- Nexus & threshold alerts
- Automatic invoices
- Quaderno Checkout
- Five-star support
- +2 more
Startup$49/month
- International tax calculations
- Nexus & threshold alerts
- Unlimited users
- Automatic invoices
- Quaderno Checkout
- +4 more
Business$99/month
- International tax calculations
- Nexus & threshold alerts
- Unlimited users
- Automatic invoices
- Quaderno Checkout
- +4 more
Growth$149/month
- International tax calculations
- Nexus & threshold alerts
- Unlimited users
- Automatic invoices
- Quaderno Checkout
- +4 more
EnterpriseContact sales

as of 2026-08-03verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	FOSSBilling	Quaderno
WebPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✗

Platforms

Web

FOSSBilling✓

Quaderno✓

Deployment

Cloud / SaaS

FOSSBilling✗

Quaderno✓

Self-hosted

FOSSBilling✓

Quaderno✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

FOSSBilling

4 total

cPanel
Plesk
DirectAdmin
HestiaCP

Independently observed

Quaderno

Leader

12 total

Stripe
PayPal
GoCardless
Xero
Braintree
Hotmart
PEPPOL
TicketBAI
Facturae
Square
Amazon
WooCommerce

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.