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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Builder for conversational forms and surveys with logic, offered in the cloud or as a WordPress plugin.

Since 2018

Free plan · Forms and surveys

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Runs browser and API checks against your app from many regions and alerts you when they fail, set up as code.

Since 2021

Free plan · Uptime and monitoring · Developers

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Sets up and manages your web servers and handles site deployments, with extra help for Laravel apps.

Subscription · Developer tools · Agencies

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A free e-learning platform from Greece's GUnet for schools and universities to run online courses and exercises.

Free · Courses and learning · Schools and tutors

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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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A Mac PDF reader for studying hard documents: ask questions about the page, get summaries and quizzes, and have passages read aloud.

Since 2026

Notes and knowledge · Individuals and families

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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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WordPress plugin for building, selling and running online courses and memberships on your own site.

Free plan · Communities and memberships · Creators and writers

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Build onboarding for new hires from checklists, quizzes and videos, then track each person through to the end.

Since 2026

Payroll and HR

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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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Sends alerts to on-call staff, handles their rotas and runs status pages so tech teams can respond to outages quickly.

Since 2020

Free trial · Uptime and monitoring · Developers

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Open-source form builder for surveys, quizzes and lead capture with conditional logic, hosted or on your own server.

Since 2024

Free plan · Forms and surveys

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Monitors websites, servers, cron jobs, DNS records and SSL certificates, with alerts and public status pages.

Since 2024

Free plan · Uptime and monitoring · Developers

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Hosted status pages with built-in uptime checks, so you can keep customers informed during outages and cut support tickets.

Free plan · Uptime and monitoring · Software companies

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Monitors website uptime from several countries, tries automatic recovery, and calls or texts you if the problem stays.

Subscription · Uptime and monitoring

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Gathers status updates from thousands of cloud services you depend on, warns you about outages and shows them on one page.

Uptime and monitoring · Software companies

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A Persian language tool for building online surveys, quizzes and forms and analysing the answers.

Free plan · Forms and surveys

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Checks your websites, SSL certificates, DNS and domains every 30 seconds and alerts you when something breaks or expires.

Free plan · Uptime and monitoring · Agencies

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A free status page you host yourself to tell customers about outages, incidents and planned maintenance.

Free · Uptime and monitoring · Software companies

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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 step-by-step forms for surveys, leads and quizzes, with logic, webhooks and unlimited responses on the free plan.

Free plan · Forms and surveys

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Alerts you when a cron job misses its ping or a site, certificate or domain has a problem, with status pages included.

Free plan · Uptime and monitoring · Agencies

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Describe a form in plain text and get questions, logic and design drafted for you, then edit it, free with unlimited responses.

Since 2024

Free plan · Forms and surveys

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Watches the status pages of thousands of outside services and alerts you when the ones you depend on go down.

Since 2024

Free plan · Uptime and monitoring · Developers

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

Since 2024

Free plan · Courses and learning · Individuals and families

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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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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 websites, APIs and cron jobs every 30 seconds and confirms an outage before alerting your team.

Subscription · Uptime and monitoring · Developers

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Monitors websites and Linux servers, sends alerts by email, SMS or call, and hosts branded status pages on your domain.

Free plan · Uptime and monitoring · Developers

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Tells developers when scheduled jobs, agents, websites or APIs fail or run late, and hosts status pages for customers.

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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Checks your websites, APIs and ports and messages you on WhatsApp after repeated failures, with status pages and SSL checks.

Free plan · Uptime and monitoring · Developers

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Runs incidents from alert to postmortem for engineering teams, with on-call rotas, escalations and status pages included.

Free plan · Uptime and monitoring · Developers

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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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Open source uptime checks, alerts and public status pages that you or an AI agent can manage, with no charge per monitor.

Free plan · Uptime and monitoring · Developers

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Uptime checks for sites, APIs, databases and queues you run on your own server, with alerts and public status pages.

Free · Uptime and monitoring · Developers

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WordPress form builder for contact forms, surveys, quizzes and calculators, with entries shown as listings or directories.

Free plan · Forms and surveys

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WordPress plugin for making popups, sticky bars, optin forms and quizzes to turn visitors into leads.

Free plan · Forms and surveys

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Open-source monitoring you host yourself for websites, servers, containers and SSL, with status pages and alerts.

Free · Uptime and monitoring · Developers

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A free status page and uptime monitor you run in Docker, with incident updates, maintenance plans and subscriber notices.

Free · Uptime and monitoring · Developers

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Build surveys, polls and quizzes inside WordPress and keep every response on your own site.

Free plan · Forms and surveys

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Checks websites and APIs from several regions, alerts whoever is on call and runs a public status page.

Free plan · Uptime and monitoring · Agencies

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Spots DDoS attacks on your servers within a second and triggers firewall, BGP or scrubbing responses.

Since 2026

Subscription · Uptime and monitoring · Developers

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Watches websites and APIs, alerts you on several channels, tracks incidents and hosts status pages, all from an independent EU company.

Since 2025

Free plan · Uptime and monitoring · Agencies

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WordPress plugin that lets course creators, schools and coaches build lessons, quizzes and certificates, and sell access.

Free plan · Courses and learning · Agencies

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Alerts you when AI agent runs, cron jobs or CI pipelines fail, stall or never start, with status pages.

Free plan · Uptime and monitoring · Developers

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Catches missed cron runs, stalled background jobs and site downtime through heartbeat pings, with public status pages.

Free plan · Uptime and monitoring · Developers