Open Source Lemon Squeezy Alternatives
A curated collection of the 2 best open source alternatives to Lemon Squeezy.
The best open source alternative to Lemon Squeezy is Gumroad. If that doesn't suit you, we've compiled a ranked list of other open source Lemon Squeezy alternatives to help you find a suitable replacement. Other interesting open source alternative to Lemon Squeezy is Polar.
Lemon Squeezy alternatives are mainly Finance & Accounting but may also be Learning Management Systems (LMS). Browse these if you want a narrower list of alternatives or looking for a specific functionality of Lemon Squeezy.
The source of Gumroad's web application, a Rails e-commerce platform where creators sell digital products directly to buyers.
This repository holds the source of the Gumroad web application itself, not a trimmed-down sample of it. Gumroad is an e-commerce platform for creators who sell straight to consumers, and what runs the storefront is what you are reading.
It is a Ruby on Rails application with a JavaScript build step and a Sidekiq worker, developed against Docker services for MySQL 8.0, Redis and Elasticsearch. Seller subdomains and the API host resolve under localhost, so no edits to your hosts file are needed.
Getting an instance running locally means installing a real production toolchain.
- Media processing: ImageMagick handles preview editing and libvips covers newer image formats through ActiveStorage.
- Video metadata: ffprobe, shipped with FFmpeg, reads metadata out of uploaded video files.
- PDF handling: pdftk stamps files with the logo and the buyer's email, and wkhtmltopdf renders invoices.
- Search: Elasticsearch indices must be rebuilt explicitly after setup or the app raises index errors.
- Credentials: the app boots without any, and an environment file adds S3, Stripe or Resend when you need them.
Tests run under RSpec, with integration specs driving Chrome through Capybara and Selenium. Contribution works unusually here: there is no inbound review queue, so you fork, open the pull request against your own fork and email support with a link. The bar is the same one the team applies internally, meaning visual evidence for user-facing changes, QA steps, test results and a disclosure naming any model used.
A billing platform for AI products, letting teams meter tokens, agent runs, and compute without building payment infrastructure themselves.
Polar is the financial layer for software that charges by usage. It removes the need to build billing infrastructure from scratch, which for an AI company means metering tokens, agent runs, and compute long before any of it becomes an invoice.
Pricing models compose instead of being fixed. Usage billing, subscriptions, seats, credits, trials, and discounts can be combined however the product charges, and metering is precise down to the individual event.
Polar also acts as merchant of record, which changes how much of the billing operation a team has to run itself.
- Tax handling: sales tax and VAT are handled worldwide on the seller's behalf.
- Billing boilerplate: receipts, customer accounts, and dunning belong to the platform rather than the product.
- Checkout and metrics: hosted checkouts and realtime revenue metrics come with the integration.
- AI workloads: token billing wraps any model call, agent runs are charged with step-level granularity and retries that avoid double billing, and GPU work is metered by the second.
- API and SDKs: an HTTP API with maintained SDKs for JavaScript and Python covers docs, sites, and services.
Fees are charged per transaction, starting at 5.00% plus 50 cents on the free Starter plan and falling across the paid tiers, and eligible startups can apply for a year on the most generous plan. Feature requests and bug reports go through the dashboard, and the repository documents how to set up a development environment.
