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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Lets teams edit, test and send transactional email templates without code deploys, with A/B tests and analytics.

Since 2014

Subscription · Transactional email · Software companies

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Email marketing app for sending newsletters, campaigns and automated sequences, built for teams that write together.

Since 2018

Free plan · Email marketing · Online sellers

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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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Open-source backend for app builders with auth, databases, storage, functions and hosting, run in the cloud or on your own servers.

Since 2021

Developer tools · Developers

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Self-hosted identity provider that gives an organisation single sign-on and login flows across its apps, with APIs and templates.

Security and passwords

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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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Records visitor sessions on your site and uses AI to point out errors, rage clicks and drop-offs, alongside heatmaps.

Free plan · Website analytics

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Build and A/B test pricing tables for your website without code, with Stripe revenue insights.

Since 2024

Free plan · Website builders · Online sellers

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Build popups, multi-step forms, quizzes and on-site widgets to collect leads and sales from website visitors.

Free plan · Forms and surveys

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Handles in-app subscriptions for mobile apps, with a paywall builder, price tests and revenue reports for app teams.

Free plan · Payments and checkout · Developers

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Add one script to your site for widgets like local pricing, exit offers and social proof to lift sales.

Since 2025

One-off payment · Marketing and social · Online sellers

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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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Hosted app backend with database, user login and generated REST and GraphQL APIs, so developers skip running servers.

Developer tools · Developers

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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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Design, send and measure email campaigns and push messages, with a WooCommerce plugin for online shops.

Free plan · Email marketing

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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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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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Turn app features on or off and roll them out to chosen users without redeploying, with unlimited team seats.

Free plan · Developer tools · Developers

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Serverless Postgres that keeps each customer's data and vector embeddings in its own virtual database, for teams building B2B SaaS.

Developer tools · Developers

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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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Lets app and game developers change settings and run A/B tests remotely, without shipping a new build or waiting for store review.

Since 2024

Developer tools · Developers

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Hosts apps from Git on European servers and adds user login through a hosted OAuth and OpenID Connect server.

Free plan · Security and passwords · Developers

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Feature flag service that lets software teams roll out, test and switch off features in production without redeploying.

Subscription · Developer tools · Developers

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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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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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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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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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Managed hosting of the open-source Para backend with a JSON API, login, search and backups, priced per app.

Free plan · Developer tools · Developers

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Login, passkeys, SMS and WhatsApp codes, SSO and user management for apps, run in their cloud or on your servers.

Free plan · Security and passwords · 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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A help centre that spots product changes and drafts article updates for your support team to approve.

Since 2026

Free plan · Customer support · Software companies

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Open-source login service with passkeys, 2FA and SSO for app makers, run in Hanko's cloud or on your own servers.

Since 2025

Free plan · Security and passwords · Developers

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Create branded short links and QR codes, track clicks and route visitors by device or country, for marketing teams.

Since 2026

Free plan · Marketing and social

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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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Shows different text, popups or redirects to each WordPress visitor based on location, device or behaviour.

Free plan · Marketing and social

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A hosted wiki that Claude, ChatGPT, Cursor and other AI agents share through MCP, so people can see and edit what the agents know.

Free plan · Developer tools · Developers

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Feature flags and A/B tests that read results from your own data warehouse, for software product teams.

Free plan · Website analytics · Software companies

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WordPress plugin for building popups and bars with display rules, A/B tests and email signup capture.

Marketing and social

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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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WordPress plugin that pins a floating button to blog posts so bloggers get more clicks on offers and contact links.

Free plan · Marketing and social · Creators and writers

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Build a pre-launch waitlist page where signups earn rewards for referring friends, with emails and A/B tests.

Since 2025

Free plan · Marketing and social · Online sellers

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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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Open-source wiki software you host yourself so a team can write and share its internal documentation.

Free · Notes and knowledge

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Drop in papers, notes and transcripts and an AI agent files them into a cited, linked markdown wiki you keep.

Since 2026

Notes and knowledge · Individuals and families

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Save videos, articles and PDFs, then ask questions in plain English to pull out what they said.

Since 2025

Subscription · Notes and knowledge · Individuals and families

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A self-hosted knowledge base that serves Markdown files as searchable, editable docs for teams.

Free · Notes and knowledge