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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Watches web pages for changes and sends alerts or scraped data to Slack, Discord, Telegram or Google Sheets without code.

Since 2019

Free plan · Uptime and monitoring

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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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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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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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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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Hosted RabbitMQ and LavinMQ message queues that are monitored and maintained for you on the major clouds.

Developer tools · Developers

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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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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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Send JSON events from your app with one request, then chart, query with SQL, set alerts and embed dashboards.

Since 2022

Free plan · Website analytics · Developers

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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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Self-hosted, open-source spam filter for website forms that blocks bots without puzzles or cookies.

Free · Forms and surveys

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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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Watches AI agents in production, groups recurring failures and alerts you so a coding agent can fix them.

Free plan · Uptime and monitoring · Developers

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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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Sends messages from your scripts, servers or webhooks straight to the Pocket Alert app on your iPhone or Android phone.

Since 2024

Free plan · Uptime and monitoring · Developers

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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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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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Checks your websites, SSL, ports and cron jobs, confirms outages from other regions and runs status pages on your domain.

Since 2024

Free plan · Uptime and monitoring · Online sellers

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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 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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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 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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Tracks machine learning experiments, metrics and model versions for ML teams, with an API compatible with Weights and Biases.

Free trial · Developer tools · Developers

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Adds an accessibility widget to your website and scans pages for WCAG problems, with tools for alt text and contrast.

Free plan · Website builders

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Records each step of an AI agent's run so developers can spot slow calls, errors and token costs.

Since 2026

Free plan · Uptime and monitoring · Developers

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Writes descriptive alt text for uploaded images or image links, helping sites rank better and work for screen reader users.

Since 2025

Subscription · SEO · Online sellers

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Watches your sites, certificates, DNS records and scheduled tasks around the clock and tells your team as soon as something fails.

Subscription · Uptime and monitoring · Developers

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Watches web pages, news and social sites for topics you pick and alerts you with a summary when something changes.

Since 2025

Free plan · Uptime and monitoring · Individuals and families

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A web workspace where analysts write SQL over market prices, macro series and SEC filings, then chart the results without Python.

Since 2026

Subscription · Data and spreadsheets

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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

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Gives your OpenClaw AI agent a phone line so it can call you with alerts and briefings when your rules trigger.

Since 2026

Subscription · Automation and integrations · Individuals and families

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Tracks API traffic, errors and response times, logs requests and sends alerts, set up with a few lines of code.

Since 2025

Free trial · Uptime and monitoring · Developers

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Add one script tag to a site and each article gets an audio player that reads it aloud.

Since 2026

Video and audio · Creators and writers

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Watches MySQL, PHP-FPM, Varnish and NGINX servers in one dashboard with alerts, as a swap in replacement for NGINX Amplify.

Since 2026

Free plan · Uptime and monitoring · Developers

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

Travel · Individuals and families

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Makes your Mac trackpad tap when the pointer moves over buttons and links, with visual aids for accessibility.

Free · Something else · Individuals and families

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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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Desktop app that softens strobing and sudden bright flashes on screen for people with photosensitive epilepsy.

Since 2026

Health and habits · Individuals and families

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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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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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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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Server monitoring for teams with cloud or dedicated machines. Install with one command, and get alerts only when a person needs to act.

Free plan · Uptime and monitoring · Developers

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A Mac menu bar app that reads any selected text aloud with offline speech models, including local voice cloning.

Since 2026

Free · Video and audio · Individuals and families

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Tracks domain renewals, SSL certificates and DNS records for many sites and alerts you before something lapses or breaks.

Subscription · Uptime and monitoring · Agencies

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WordPress plugin that sends site email through a proper SMTP provider and logs each message so you can see if it arrived.

Free · Transactional email

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Falco based Kubernetes security tool that spots attacks inside your own cluster, sends no telemetry and is paid for once.

Since 2026

One-off payment · Security and passwords · Developers

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

Free · SEO