No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Lago
Open-source billing engine that meters usage, runs subscription and hybrid plans, and issues invoices for software firms.
Since 2021
Free · Invoicing and billing · Software companies
- Autumn
Adds usage limits, credits, plans and spend controls on top of Stripe so AI startups can change pricing without rebuilding billing.
Free plan · Payments and checkout · Developers
- AIR Blackbox
Records every AI agent decision in a signed, tamper-evident log so teams can show regulators what their AI did under the EU AI Act.
Free plan · Developer tools · Developers
- Meteroid
Billing for SaaS and AI companies that handles subscriptions, usage metering, quotes and invoices.
Free plan · Invoicing and billing · Software companies
- DBLift
Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.
Since 2026
Free plan · Developer tools · Developers
- Paymenter
Self-hosted billing for web and game hosting firms that automates subscriptions and server setup, with a WHMCS migration tool.
Free · Invoicing and billing · Software companies
- Polar
Takes payments, subscriptions and usage billing for software makers and handles sales tax worldwide as merchant of record.
Payments and checkout · Developers