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
- Checkout Page
Build hosted or embedded checkout pages to sell products, subscriptions, tickets and services through your own Stripe account.
Since 2018
Free plan · Payments and checkout · Online sellers
- Swell
An ecommerce platform with an API for selling products and subscriptions, with custom storefronts and checkout, for online brands.
Since 2021
Free trial · Online shops · Shops and retail
- Chip In
Budgeting app that links bank accounts, flags bills due before payday and lets couples split costs they choose to share.
Free plan · Money and budgeting · Individuals and families
- molab
A cloud workspace for creating, running and sharing marimo Python and SQL notebooks for data work
Since 2024
Developer tools · Developers
- Quadratic
Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.
Since 2023
Data and spreadsheets
- Meteroid
Billing for SaaS and AI companies that handles subscriptions, usage metering, quotes and invoices.
Free plan · Invoicing and billing · Software companies
- ManiDesk
A web workspace where analysts write SQL over market prices, macro series and SEC filings, then chart the results without Python.
Since 2026
Subscription · Data and spreadsheets
- Polar
Takes payments, subscriptions and usage billing for software makers and handles sales tax worldwide as merchant of record.
Payments and checkout · Developers
- Dodo Payments
Takes payments as merchant of record for software and AI products, with subscriptions, usage billing and tax handled.
Since 2025
Invoicing and billing · 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
- Kelviq
Acts as merchant of record for software companies, handling subscriptions, usage billing, feature limits and global sales tax.
Since 2026
Pay as you go · 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
- moneydevkit
Adds checkout, subscriptions and webhooks to apps, with docs an AI coder can follow and wallets AI agents can spend from.
Since 2025
Payments and checkout · Developers