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
- MLJAR Studio
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
- Serendipity
A self-hosted PHP blog engine for writers who want to run their own blog, extended with plugins and themes.
Free · Website builders · Individuals and families
- Indigo
Mac app that runs Nginx, PHP, MySQL, PostgreSQL and Redis locally for web developers without Docker or VMs.
Since 2022
Free plan · Developer tools · Developers
- Folderly
Helps students sort courses, tasks, class schedules, flashcards and files into colour-coded folders.
Free · Focus and productivity · Individuals and families
- Uptrace
Collects traces, metrics and logs through OpenTelemetry for engineering teams, hosted or on your own servers.
Since 2022
Free trial · Uptime and monitoring · Developers
- myTinyTodo
A simple to-do list app you host yourself, with several lists, tags, due dates and priorities.
Free · Projects and tasks · Individuals and families
- Grape
A note app for desktop and phone that records and transcribes, then answers questions using your own notes.
Since 2026
Notes and knowledge · Individuals and families
- Thelia
French open source e-commerce platform for building custom online stores, with click and collect and ERP or CRM connections.
Free · Online shops · Shops and retail
- SeedDMS
Open source document management system you host yourself to store files and run review workflows.
Free · Documents and e-signature
- Nihongo Lessons
An iPhone app that takes Japanese learners from beginner to fluent with one new sentence per flashcard and spaced review.
Since 2015
Courses and learning · Individuals and families
- Burning Vocabulary
A browser extension that saves and highlights words you look up on web pages, then drills them with flashcards.
Since 2020
Free plan · Courses and learning · Individuals and families
- 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
- Revu
A study app for students with spaced repetition flashcards, made from notes and PDFs, and scheduled around your calendar.
Free plan · Courses and learning · Individuals and families
- October CMS
A self-hosted content management system built on Laravel that developers and studios use to build client websites.
Subscription · Website builders · Agencies
- FlatPress
Lightweight blog software in plain PHP that stores posts as files, with themes, plugins and comment spam protection.
Free · Website builders · Individuals and families
- Chyrp Lite
A small PHP blog engine you install on ordinary web hosting, with themes and an easy admin panel.
Free · Website builders · 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
- PromptLayer
Lets AI teams version and test prompts, run evaluations and trace production agent calls outside the codebase.
Since 2023
Developer tools · Developers
- Feyn
Flashcard app for iPad and iPhone where students draw, type or add images to cards and review them with spaced repetition.
Since 2024
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
- Dash0
Observability built on OpenTelemetry for software teams, covering logs, traces, dashboards and alerts with cost control.
Since 2024
Free trial · Uptime and monitoring · 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
- SigNoz
Application performance monitoring with logs, traces, metrics and alerts on OpenTelemetry, in the cloud or self-hosted.
Since 2022
Free plan · Uptime and monitoring · Developers
- 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
- WordWise
A language app that translates words offline, saves them to your own tagged word list and helps you review them with flashcards.
Since 2025
Courses and learning · Individuals and families
- nano
Security log search, detection rules and OpenTelemetry data in one store, run in the cloud or on your own servers.
Since 2026
Uptime and monitoring · Software companies
- 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
- Parseable
Stores and queries logs, metrics and traces on object storage at low cost, as a managed cloud or on your own servers.
Since 2026
Uptime and monitoring · Developers
- 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
- Zhenzhu
Hover over Chinese text in any Mac app to see pinyin, meanings and sentence breakdowns, and save words as flashcards.
Since 2026
Free plan · 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
- MarginNote 5
A reading and study app that lets you clip from books and papers, link the clips in mind maps and review them as cards.
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
- 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.
Since 2026
Free plan · Developer tools · Developers
- 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
- OpenObserve
Stores and searches logs, metrics and traces at low storage cost, as a cloud service or software you host yourself.
Free plan · Uptime and monitoring · Developers
- Multiplayer
Captures full stack session data from production and passes it to coding agents like Claude Code so they can fix bugs.
Since 2025
Developer tools · Developers
- 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
- Vartiq
Hosted service that sends webhooks for software teams, with retries, dead letter queues and delivery logs.
Since 2025
Free plan · Developer tools · Developers
- Gigapipe
An observability backend on ClickHouse that takes logs, metrics, traces and profiles and lets teams query them in Grafana.
Free plan · Uptime and monitoring · Developers
- 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
- Textpattern CMS
Lightweight open source PHP content management system with tag-based templates and plugins for running a website or blog.
Free · Website builders
- 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
- Coupling
A language app where a partner or friend fills in words, audio and sentences for you to study, on iPhone and Android.
Since 2025
Courses and learning · Individuals and families
- SubSmith
Makes subtitles for your video and audio files so language learners can look up words and send them to Anki.
Since 2026
One-off payment · Courses and learning · Individuals and families
- Loudwalk
Reads your Anki flashcards aloud through headphones and grades your spoken answers, with an AI tutor for follow-up questions.
Since 2026
Free plan · Courses and learning · Individuals and families