Lotus

Judgement

What it is

Building block

What it does

A pricing and billing engine for SaaS subscriptions and usage-based plans, with a control panel for designing and testing pricing.

Adopt it when

A SaaS team wants to experiment with pricing models on a self-hosted engine.

Watch out

Still pre-1.0, self-hosting is the only option, and default admin credentials must be changed.

Ready for

Experimental

Runs as

Self-hosted server

Built with

Python, Django, TypeScript and Go

How established

Established: started 4 years ago, latest release 0.10.2.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Lotus → CPython → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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