No moat. Still in business.

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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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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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A Chrome extension that strips clutter from web pages and adds reading rulers, text to speech and PDF tools for easier reading.

Since 2019

Focus and productivity · Individuals and families

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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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Gives you a phone number your audience can call to hear your podcast or sermons, no internet or apps needed.

Since 2020

Subscription · Podcasting · Creators and writers

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Adds a text-to-speech player to blogs and publisher sites so visitors can listen to articles.

Since 2019

Free plan · Video and audio · Creators and writers

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An ecommerce platform with an API for selling products and subscriptions, with custom storefronts and checkout, for online brands.

Since 2021

Free trial · Online shops · Shops and retail

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Open-source billing engine that meters usage, runs subscription and hybrid plans, and issues invoices for software firms.

Since 2021

Free · Invoicing and billing · Software companies

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Build hosted or embedded checkout pages to sell products, subscriptions, tickets and services through your own Stripe account.

Since 2018

Free plan · Payments and checkout · Online sellers

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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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A phone app where friends and family swap voice memos and reply to specific moments, without booking a call.

Free · Something else · 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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WordPress plugin that adds a listen button so visitors can hear posts read aloud in natural voices.

Free plan · Video and audio · Creators and writers

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A free desktop app where you hold a shortcut, speak, and your words are typed into whatever text field you are in.

Free · Focus and productivity · Individuals and families

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Find public toilets nearby with reviews, photos, door codes and details like changing tables.

Since 2024

Travel · Individuals and families

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Writes alt text and file names for images in bulk to help WordPress sites with search ranking and accessibility.

Free plan · SEO · Agencies

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Budgeting app that links bank accounts, flags bills due before payday and lets couples split costs they choose to share.

Free plan · Money and budgeting · Individuals and families

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Apps, fonts and a keyboard that bold the start of words so people can read text faster and with more focus.

One-off payment · Focus and productivity · 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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A WooCommerce plugin that lets shops sell subscriptions, repeat deliveries and instalment plans, with dunning and cancellation flows.

Payments and checkout · Online sellers

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A phone app that reads ebooks, documents, websites and printed pages aloud in 40 languages, useful for busy or visually impaired readers.

Video and audio · Individuals and families

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A browser extension that checks text on any site you visit and boosts contrast so it is easier to read.

Free · Something else · Individuals and families

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

Free plan · Email marketing

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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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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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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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A cloud workspace for creating, running and sharing marimo Python and SQL notebooks for data work

Since 2024

Developer tools · Developers

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CAPTCHA that blocks bot sign-ups and form spam without cookies or tracking, available as a WordPress plugin, self-hosted or managed.

Free plan · Security and passwords

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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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Adds a panel so low-vision visitors can change font size, colours and images, meeting Russian GOST accessibility rules.

Free · Website builders

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A browser extension that swaps site video players for one that preloads faster and adds captions and accessibility controls.

Since 2023

Free · Video and audio · Individuals and families

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A WordPress plugin for top bars and popups with countdowns, coupons and signup forms, plus click stats and A/B tests.

Free plan · Marketing and social

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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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Self-hosted billing for web and game hosting firms that automates subscriptions and server setup, with a WHMCS migration tool.

Free · Invoicing and billing · Software companies

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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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A WooCommerce plugin for selling subscriptions, taking recurring payments and tracking renewals for online stores.

Free plan · Payments and checkout · Online sellers

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Uses AI to write meta titles, descriptions, keyphrases and image alt text in bulk across a WordPress site.

Free plan · SEO · Online sellers

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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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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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WordPress plugin for selling physical goods, digital downloads and subscriptions with built in checkout and payment gateways.

Payments and checkout · Online sellers

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Scores alt text across a WordPress media library and lets you fix missing or weak alts in bulk.

Free · SEO

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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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Shows live captions of office VoIP phone calls on a phone or tablet so staff with hearing loss can follow every word.

Something else

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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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Writes alt text for website images in over 130 languages and finds images missing descriptions, for accessibility and SEO.

Free plan · SEO

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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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Scans websites and PDFs for WCAG accessibility problems, scores them, and can tag PDFs to fix issues.

Since 2026

Website builders