Open source Billing & subscriptions

Lago

98 · Healthy

Usage metering and billing engine for subscriptions, usage-based plans, credits and invoicing.

AGPL-3.0★ 11kLast commit 2 days ago

Polar

97 · Healthy

Billing platform for software products, with subscriptions, usage billing, checkout and license keys.

Free to useApache-2.0★ 10kLast commit yesterday

Autumn

90 · Healthy

Pricing and billing layer on top of Stripe that handles plans, usage limits, credits and feature access.

Free to useApache-2.0★ 2.8kLast commit yesterday

OpenMeter

88 · Healthy

Real-time usage metering for AI, API and infrastructure products, feeding usage-based billing.

Free to useApache-2.0★ 2.4kLast commit yesterday

Kill Bill

77 · Stable

Subscription billing and payments platform with product catalogs, invoicing, dunning and payment gateway plugins.

Free to useApache-2.0★ 5.8kLast commit 2 days ago

Flexprice

72 · Stable

Usage-based pricing and billing with real-time metering, credits and top-ups, and feature entitlements.

Free core, paid extrasAGPL-3.0★ 6.9kLast commit 2 days ago

Polar

Billing platform for software products, with subscriptions, usage billing, checkout and license keys.

GitHub polar.sh

Alternative to

Paddle Lemon Squeezy

Will it still be around?

Healthy

Score 97/100

Details

Can a business use it freely?

Free to use

Apache-2.0 · open source (permissive)

Details

Flat Rate Deploy

Monthly cost

Polar on OpenTools: $39
Paddle: ~~$550~~

You save each month

$511/mo

93% less than today

Saving from month one

You save

Over 3 years: $18,396
In year one: $6,132

List price checked 9 Oct 2026 · Source · Disclaimer

Bespoke

We set up Polar for you. You pay once.

Worth it once your bill is $580 a month or more

You pay $550 a month for Paddle. Setup is $3,000, paid once, and after that Polar runs for about $324 a month (your server, about $24, plus about $300 of maintenance), so at this size it takes more than 12 months to pay back.

Worth it from: $580/mo billpays back within 12 months
Setup, paid once: $3,000fixed price, agreed up front
Maintenance: $150/houronly when you ask for it

What we do

Data migrationRecords, files and history moved from Paddle, with a test run before the cut-over
ConfigurationWorkflows, custom fields, roles, permissions and SSO set up for your team
IntegrationsConnected to your CRM, Slack, accounting tools and APIs
MaintenanceUpdates, fixes and admin help when you ask, at $150 an hour
Paid editionsThe vendor's paid features, enabled, with the licence at cost
ComplianceData residency, audit logs, data processing agreements, security questionnaires
TrainingAn admin walkthrough, a runbook and sessions for your team

Total spent, month by monthPaddleBespoke Polar

Show as a table

Month	Paddle	Bespoke	Saved so far
Today	$0	$3,000	–
Month 3	$1,650	$3,972	–
Month 6	$3,300	$4,944	–
Month 9	$4,950	$5,916	–
Month 12	$6,600	$6,888	–
Month 18	$9,900	$8,832	$1,068
Month 24	$13,200	$10,776	$2,424
Month 30	$16,500	$12,720	$3,780
Month 36	$19,800	$14,664	$5,136

Servers run on your own cloud account, paid to your provider. Running cost counts about 2 hours of maintenance a month; you're billed only for hours you ask for. Migration and the other activities are quoted with the setup.

Get a fixed quote

Health score: 97/100

Healthy · activity, bus factor and issue responsiveness, from GitHub

Score v2 · How it works

Activity

45% weight

100/100

Last commit yesterday (100/100).
7272 commits in the past 12 months (100/100).
49 releases in the past 12 months (100/100).

Bus factor

30% weight

100/100

Top contributor wrote 24% of the last 87 commits (past 12 months).
10 people authored those commits.

Responsiveness

25% weight

86/100

97% of all issues are closed (63 open, 2361 closed) (100/100).
23 of 30 recent issues got a reply or were closed (77/100).

License

Free to use

Apache-2.0 · Open source (permissive)

What you need to do

Use, change, host and sell it for any purpose, commercial included, with no license to buy. Keep the copyright notice.

Apache License 2.0 · Open source (permissive). OSI-approved license with few conditions beyond keeping the copyright notice.

Detected by GitHub as Apache-2.0.

GitHub activity

Stars: 10k
Forks: 794
Commits, 12 mo: 7.3k; last yesterday
Releases, 12 mo: 49; last 3 days ago
Contributors: 125; 10 in last 87 commits
Open issues: 63; 2.4k closed

Snapshot from 2026-10-09

Top contributors

Points for pull requests merged into Polar and reviews of them since 30 September 2026 (older history is still loading). Building something another user asked for earns more.

Bespoke · we set it up$3,000once Flat Rate Deploy$39/mo