No moat. Still in business.

0

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

Since 2016

Projects and tasks

0

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

0

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

0

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

0

Lightweight blog software in plain PHP that stores posts as files, with themes, plugins and comment spam protection.

Free · Website builders · Individuals and families

0

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

0

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

Free · Focus and productivity · Individuals and families

0

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

Free · Customer support

0

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

0

Open source document management system you host yourself to store files and run review workflows.

Free · Documents and e-signature

0

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

0

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

Free plan · Security and passwords

0

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

0

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

0

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

0

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

0

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

Free plan · Projects and tasks

0

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

0

A small PHP blog engine you install on ordinary web hosting, with themes and an easy admin panel.

Free · Website builders · Individuals and families

0

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

0

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

Since 2023

Data and spreadsheets

0

A simple to-do list app you host yourself, with several lists, tags, due dates and priorities.

Free · Projects and tasks · Individuals and families

0

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

0

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

0

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

Courses and learning · Individuals and families

0

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

Notes and knowledge

0

A self-hosted content management system built on Laravel that developers and studios use to build client websites.

Subscription · Website builders · Agencies

0

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

Since 2022

Free · Notes and knowledge

0

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

Free plan · Website builders · Software companies

0

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

0

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

0

Lightweight open source PHP content management system with tag-based templates and plugins for running a website or blog.

Free · Website builders

0

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

0

Learn Japanese or Korean by tapping words in YouTube videos, manga and books, with flashcards that track what you know.

Free plan · Courses and learning · Individuals and families

0

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

0

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

Free · Customer support

0

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

0

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

Free trial · Customer support · Software companies

0

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

0

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

Since 2026

Notes and knowledge

0

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

Free plan · Customer support

0

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.

Free plan · Developer tools · Developers

0

Flashcard maker that schedules reviews by spaced repetition, with dictionaries and text to speech for language learners.

Free plan · Courses and learning · Individuals and families

0

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

0

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

0

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

Free plan · Customer support · Software companies

0

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

0

Build a chat agent from your own docs and FAQs, test it, then put it on your site or WhatsApp to answer customers.

Free plan · Customer support