No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- FlashTabs
Make your own flashcard decks and review them on a spaced repetition schedule in the browser.
Since 2015
Free plan · Courses and learning · Individuals and families
- 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
- Quadratic
Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.
Since 2023
Data and spreadsheets
- redirs
Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.
Free plan · Website builders
- Overcast
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
- pbar.io
Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.
Uptime and monitoring · Developers
- RemNote
Note app for students that builds flashcards, quizzes and summaries from notes and PDFs with spaced repetition.
Since 2021
Free plan · Courses and learning · Individuals and families
- PDF To Quiz
Students turn class notes or a PDF into a practice test that marks itself and explains each question they got wrong.
Since 2024
Free plan · Courses and learning · Individuals and families
- Memozora
Flashcard maker that schedules reviews by spaced repetition, with dictionaries and text to speech for language learners.
Since 2024
Free plan · Courses and learning · Individuals and families
- Anki
Flashcard app that uses spaced repetition so learners review hard cards more often, with sync between devices.
Courses and learning · Individuals and families
- Unihongo
An app for learning Japanese with an AI tutor, speaking roleplays, kanji, quizzes and a personal study plan.
Since 2026
Free plan · Courses and learning · Individuals and families
- Card Snap
Turns notes, PDFs or images into flashcards you can study online, share by link or print.
Since 2025
Free · Courses and learning · Individuals and families
- Janus
Turns PDFs and notes into flashcards you can review and edit, then export to Anki, Mochi or SuperMemo.
Since 2026
Subscription · Courses and learning · Individuals and families
- Lector
A reading app for language learners that imports books, articles and videos, translates words and sends vocabulary to Anki.
Since 2026
Free · Courses and learning · Individuals and families
- YouTube2Anki
Paste a YouTube link or upload a transcript and get an Anki flashcard deck made by AI, ready to import.
Since 2025
Free plan · Courses and learning · Individuals and families
- Meteroid
Billing for SaaS and AI companies that handles subscriptions, usage metering, quotes and invoices.
Free plan · Invoicing and billing · Software companies
- Hanabira
Learn Japanese or Korean by tapping words in YouTube videos, manga and books, with flashcards that track what you know.
Since 2025
Free plan · Courses and learning · Individuals and families
- Cuiz AI
Students upload slides or notes and get practice quizzes and spaced-repetition flashcards made from them.
Since 2025
Free plan · Courses and learning · Individuals and families
- AbjadPro
Learn to read Arabic with alphabet lessons, graded stories and flashcards that schedule reviews around your memory.
Since 2026
Free plan · Courses and learning · Individuals and families
- Polar
Takes payments, subscriptions and usage billing for software makers and handles sales tax worldwide as merchant of record.
Payments and checkout · Developers
- recall
Connect Claude or ChatGPT so they turn what you read into flashcards, then review them on any device.
Since 2026
One-off payment · Courses and learning · Individuals and families
- 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
- DollarDeploy
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
- ReadVocab
Learn English words from books you are reading, with ready-made flashcards, quizzes and a word bank.
Since 2025
Free plan · Courses and learning · Individuals and families
- 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
- flashcardaudit.com
Upload your Anki collection and get an emailed report flagging cards with factual errors or weak wording.
Since 2026
Pay as you go · Courses and learning · Individuals and families
- FixMyDocuments
Upload PDFs, Word files or audio and get quizzes, flashcards and summaries to study from, paid with credits.
Since 2024
Pay as you go · Courses and learning · Individuals and families
- 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
- DER DIE DAS
A flashcard and practice app that helps German learners remember whether a noun takes der, die or das.
Since 2026
Free · Courses and learning · Individuals and families
- Mochi
Write notes and flashcards in markdown, then review them on a spaced repetition schedule.
Since 2019
Free plan · Courses and learning · Individuals and families
- FastAPI Cloud
Hosting for Python FastAPI apps that deploys with one command and handles scaling and HTTPS for developers.
Since 2026
Developer tools · Developers
- Appliku
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
- ExamAI
Turns uploaded notes and slides into practice quizzes with daily recall and review so students are ready for exam day.
Since 2025
Free plan · Courses and learning · Individuals and families
- Owl
A flashcard app that schedules reviews with spaced repetition and can generate study decks with AI.
Since 2025
Free plan · Courses and learning · Individuals and families