No moat. Still in business.

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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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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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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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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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A web bookmark manager with a browser extension that saves, sorts and shares the sites you want to keep.

Free plan · Notes and knowledge · Individuals and families

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A Chrome extension that saves tab sessions into folders and searches open, saved and closed tabs, with paid sync across devices.

Since 2024

Free plan · Focus and productivity

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

Free plan · Website builders · Online sellers

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Cookie consent banners and consent records for websites and apps, so businesses meet GDPR and similar laws.

Free plan · Legal and compliance

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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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Self-hosted archive that saves web pages, bookmarks, feeds and media as lasting files you can search later.

Free · Notes and knowledge · Individuals and families

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A Mac app that copies clean links to files, emails, tasks and pages so you can jump back to them without searching.

Free plan · Notes and knowledge · Individuals and families

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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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Drop-in Redis replacement that aims to halve memory use, with a trial mode to test savings on your own data.

Free trial · Developer tools · Developers

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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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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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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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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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Save links to read later from any browser, then browse the pile with keyboard shortcuts, summaries and audio.

Since 2026

Notes and knowledge · Individuals and families

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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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An open source home for your notes, links and files that tags them for you and finds them by what they mean, for idea collectors.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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WordPress plugin that records heatmaps, sessions, funnels and form drop-off, storing all data on your own site.

Free plan · Website analytics

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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 no-code popup tool for shops and websites to collect emails, show offers and win back visitors about to leave.

Free plan · Marketing and social

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Site analytics with split testing that shows which campaign, page or test version led to each sale, for online businesses.

Since 2026

Subscription · Website analytics

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Save links from your browser or phone into searchable shelves you can keep private or share.

Since 2026

Free · Notes and knowledge · Individuals and families

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Fast capture for screenshots, links, files and voice memos that AI sorts and labels for later, designed for people with ADHD.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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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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Runs versioned SQL and Python database migrations with dry runs, history checks and rollbacks, for Python teams.

Since 2026

Free plan · Developer tools · Developers

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Builder for landing and lead capture pages with templates, AI drafts and A/B testing to improve conversions.

Subscription · Website builders

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

One-off payment · Marketing and social · Online sellers

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

Free plan · Marketing and social · Online sellers

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Feature flags for software teams to roll out changes to chosen users, watch error rates and roll back bad releases.

Free plan · Developer tools · Developers

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Save links from any device into lists to open later, free with a low-cost yearly upgrade for tags and locks.

Free plan · Notes and knowledge · Individuals and families

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Save books, films and places from any page and it builds cards sorted onto shelves in your private library.

Since 2026

Free · Notes and knowledge · Individuals and families

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WordPress plugin to A/B test pages, watch session recordings and heatmaps, and track WooCommerce revenue by variant.

Free trial · Website analytics · Online sellers

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A browser side panel for gathering links, quotes and images while researching, then asking AI about what you kept.

Since 2026

Free · Notes and knowledge · Individuals and families

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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

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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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Save articles, pictures and videos to read later, with highlights, labels, search and ebook export.

Free · Notes and knowledge · Individuals and families

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WordPress plugin for publishers to place, rotate, target and schedule ads from any network and track clicks.

Free plan · Marketing and social · Creators and writers

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Collects saves from X, YouTube, Instagram and your browser into a private library that AI describes so you can search in plain language.

Since 2026

Free plan · Notes and knowledge · Individuals and families

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A Chrome new tab page with widgets for notes, to-dos, weather, habits and bookmarks, kept on your own device.

Since 2026

Free · Focus and productivity · Individuals and families

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Builds sales and lead funnels inside WordPress and WooCommerce, with custom checkout pages, upsells and split tests.

Online shops · Online sellers

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Save articles, videos and PDFs to read later in a clean view, listen with text to speech, and keep a reading streak.

Since 2026

Free plan · Notes and knowledge · Individuals and families