No moat. Still in business.

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A fast shared wiki where teams keep documents, notes and project boards together.

Since 2016

Projects and tasks

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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

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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 company wiki where teams write, organise and search shared docs and policies, with search across linked tools.

Since 2020

Free plan · Notes and knowledge

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Adds AI answers, tooltips and a help widget to your app, drawn from your help docs, to cut support tickets.

Since 2024

Free trial · Customer support · Software companies

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Helps students sort courses, tasks, class schedules, flashcards and files into colour-coded folders.

Free · Focus and productivity · Individuals and families

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A lightweight Mac code editor that runs and debugs code in dozens of languages, for programmers who want quick scripts.

One-off payment · Developer tools · Developers

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Write product documentation and user manuals in Markdown and publish them as a website, PDF or eBook.

Free plan · Website builders · Software companies

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Ties logs and traces from iOS and Android apps to backend services so app teams can trace a user problem to its cause.

Since 2025

Uptime and monitoring · Developers

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A self-hosted forum with a shared library for clubs and communities who want discussions and know-how to stay findable.

Free · Communities and memberships

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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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Markdown document editor where teams and AI agents like Claude and ChatGPT write together live, with presentations and blog publishing.

Since 2026

Free plan · Documents and e-signature · Developers

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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

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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

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A wiki for SOPs, manuals and FAQs that sits in Microsoft Teams and answers staff questions from your own pages.

Since 2020

Subscription · Notes and knowledge

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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

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Shared space where teams write docs and move the same pages across boards to track project status.

Free plan · Projects and tasks

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Saves videos, podcasts, PDFs and articles, summarises them, and lets you search and chat across what you saved.

Since 2022

Free plan · Notes and knowledge · Individuals and families

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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

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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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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

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A free markdown notes app you run on your own server, with wikilinks, a graph view, diagrams, math and an MCP link for AI tools.

Free · Notes and knowledge · Individuals and families

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Flashcard app that uses spaced repetition so learners review hard cards more often, with sync between devices.

Courses and learning · Individuals and families

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Searches your company's Slack, Drive, GitHub and other tools by permission and answers questions with links to the source.

Notes and knowledge

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Free self-hosted wiki that lets a team organise its documentation into shelves, books and pages.

Since 2022

Free · Notes and knowledge

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A free knowledge base you run on your own server to publish help articles sorted into nested categories.

Free · Customer support

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Native Mac code editor for web and app developers, with Git, debugging, terminal and remote file publishing.

Free trial · Developer tools · Freelancers

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Help desk for SaaS companies with a shared inbox, knowledge base, AI replies and an in-app support widget.

Since 2024

Free plan · Customer support · Software companies

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Snap a photo of highlighted book passages and Raven turns them into tagged, searchable notes with summaries.

Since 2024

Notes and knowledge · Individuals and families

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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

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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

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A shared knowledge base for teams that flags stale docs and keeps company answers current for people and AI agents.

Since 2025

Free plan · Notes and knowledge

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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

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Terminal AI agent that edits C and C++ code, then runs your build, tests and sanitizers on each change before you see the diff.

Since 2026

Free plan · Developer tools · Developers

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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

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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

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Q&A site and knowledge base that teams can host themselves to collect answers to common questions.

Free · Customer support

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Lets WordPress site builders take snapshots, roll back broken changes, clear demo data and reset a site in one click.

Subscription · Website builders · Agencies

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Keeps documentation in GitHub repos in step with the code and shares that context with teammates and AI coding agents.

Since 2026

Free plan · Developer tools · Developers

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Saves what you work out in AI chats as searchable documents that Claude, ChatGPT, Cursor and other MCP tools can read later.

Since 2026

Free plan · Notes and knowledge · Developers

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A Slack assistant that learns your company policies and answers staff questions, and helps onboard new hires.

Since 2026

Notes and knowledge

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A WordPress helpdesk plugin with support tickets, a knowledge base, a chatbot and AI help drafting replies.

Free plan · Customer support

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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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A WordPress plugin that marks glossary terms in posts and shows their definitions in a hover tooltip.

One-off payment · Website builders · Creators and writers

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Website live chat and chatbot trained on your own content, also answering on WhatsApp, Instagram and Messenger.

Free plan · Customer support

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Collect links, screenshots, notes and files on a visual board, connect them with tags, and ask AI questions about them.

Since 2025

Free plan · Notes and knowledge · Individuals and families

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A flashcard app that makes study cards from your PDFs, articles and photos and schedules reviews so you remember them.

Since 2026

Free plan · Courses and learning · Individuals and families

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WordPress plugin for building a help center knowledge base, using AI to draft docs and answer visitor questions.

Free plan · Customer support · Software companies