No moat. Still in business.

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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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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

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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

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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

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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

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A cloud workspace for creating, running and sharing marimo Python and SQL notebooks for data work

Since 2024

Developer tools · Developers

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Fixes the mixed content and insecure content warnings a WordPress site shows after it moves to HTTPS.

Website builders

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Gets and renews free Let's Encrypt SSL certificates on cPanel shared hosting without command line work.

Free plan · Security and passwords

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Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.

Uptime and monitoring · Developers

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Choose who can see each page on a WordPress site, with teasers, redirects and paywalls for subscription content.

Free plan · Communities and memberships · Creators and writers

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Desktop data analysis app where you ask about your data in plain English and get Python code, charts and notebooks run on your computer.

Since 2017

Data and spreadsheets

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A WooCommerce plugin that lets shops sell subscriptions, repeat deliveries and instalment plans, with dunning and cancellation flows.

Payments and checkout · Online sellers

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Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.

Since 2023

Data and spreadsheets

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Billing for SaaS and AI companies that handles subscriptions, usage metering, quotes and invoices.

Free plan · Invoicing and billing · Software companies

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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.

Since 2026

Free plan · Developer tools · Developers

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Adds recurring billing, trials, split payments and subscription boxes to WooCommerce stores.

Free plan · Payments and checkout · Online sellers

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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

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Takes payments, subscriptions and usage billing for software makers and handles sales tax worldwide as merchant of record.

Payments and checkout · Developers

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WordPress plugin for selling physical goods, digital downloads and subscriptions with built in checkout and payment gateways.

Payments and checkout · Online sellers

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Takes payments as merchant of record for software and AI products, with subscriptions, usage billing and tax handled.

Since 2025

Invoicing and billing · Developers

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Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.

Free plan · Website builders

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Pools GPUs and CPUs from many cloud providers and your own servers so developers can run large data jobs in one place.

Since 2026

Developer tools · Developers

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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

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A WooCommerce plugin for selling subscriptions, taking recurring payments and tracking renewals for online stores.

Free plan · Payments and checkout · Online sellers

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Deploys apps from a GitHub repo onto a server in your own cloud account, with HTTPS and redeploys on each push.

Since 2026

Free plan · Developer tools · Developers

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Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.

Since 2026

Free plan · Developer tools · Developers

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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

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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

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WooCommerce plugin for selling subscriptions and memberships, with renewals, members only content and cancellation save offers.

Free plan · Payments and checkout · Online sellers

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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

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Hosting for Python FastAPI apps that deploys with one command and handles scaling and HTTPS for developers.

Since 2026

Developer tools · Developers

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An AI agent inside Jupyter that writes and runs Python cells, reads the results and fixes errors during data analysis.

Since 2025

Free plan · Developer tools · Developers

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Sets up and manages your own cloud server to deploy Django apps, with a dashboard, CLI and API.

Since 2021

Free plan · Developer tools · Developers

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WordPress store plugin for selling physical items, digital files and subscriptions, taking payment by Stripe, Square or PayPal.

Free plan · Online shops · Restaurants and cafés