No moat. Still in business.

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A hosted API for product teams to send app notifications over email, SMS, push, chat and an in app inbox.

Since 2020

Free plan · Transactional email · Developers

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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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A WordPress plugin that lets restaurants take table bookings on their own site, with no commission and reminder texts.

Subscription · Scheduling and booking · Restaurants and cafés

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Sends automated email, SMS, push and WhatsApp messages using user segments and a visual journey builder, and can be embedded in your app.

Subscription · Email marketing · Health and clinics

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A lightweight Mac code editor that runs and debugs code in dozens of languages, for programmers who want quick scripts.

One-off payment · Developer tools · Developers

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Contact management, email broadcasts and automated flows that run on your own WordPress site.

Subscription · CRM and sales

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Lets WordPress site builders take snapshots, roll back broken changes, clear demo data and reset a site in one click.

Subscription · Website builders · Agencies

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Ties logs and traces from iOS and Android apps to backend services so app teams can trace a user problem to its cause.

Since 2025

Uptime and monitoring · 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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Texts a client from your own phone number asking for a review once a job is done, aimed at local service businesses.

Reviews and testimonials · Trades and home services

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Texts tenants who are behind on rent from the landlord's own number and keeps following up until they pay.

Since 2026

Subscription · Property management · Property and estate agents

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A browser tool that steps through Python, JavaScript or C++ line by line and draws variables and data structures.

Courses and learning · Developers

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One API and dashboard for sending product notifications by email, SMS, push, Slack and in-app inbox.

Since 2022

Subscription · Transactional email · 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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One API and an in-app inbox component that let software teams send notifications by email, SMS, push, chat and in-app.

Transactional email · Developers

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Native Mac code editor for web and app developers, with Git, debugging, terminal and remote file publishing.

Free trial · Developer tools · Freelancers

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A Swedish tool for building and sending email newsletters, signup forms and automated mail series, free to begin.

Free plan · Email marketing

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Terminal AI agent that edits C and C++ code, then runs your build, tests and sanitizers on each change before you see the diff.

Since 2026

Free plan · Developer tools · Developers

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Finds local businesses on Google Maps, scores them as leads and sends email and SMS follow-ups, for freelancers and agencies.

Since 2026

Subscription · CRM and sales · Agencies

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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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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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Tracing and monitoring for AI agents written in Elixir, showing which model or tool call failed, slowed down or cost too much.

Since 2026

Free plan · Uptime and monitoring · Developers

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A desktop app for developers to inspect RabbitMQ queues, spy on live traffic and replay dead-lettered messages.

Since 2025

One-off payment · Developer tools · Developers

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Gives each AI agent a real email address, and soon a phone number, so it can read mail, reply and use login codes.

Since 2026

Free plan · Developer tools · Developers

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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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Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.

Uptime and monitoring · Developers

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Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.

Free plan · Website builders

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Deploys apps from a GitHub repo onto a server in your own cloud account, with HTTPS and redeploys on each push.

Since 2026

Free plan · Developer tools · Developers

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Captures full stack session data from production and passes it to coding agents like Claude Code so they can fix bugs.

Since 2025

Developer tools · Developers

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An AI agent inside Jupyter that writes and runs Python cells, reads the results and fixes errors during data analysis.

Since 2025

Free plan · Developer tools · Developers

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Email marketing service for sending newsletters and campaigns, with automations, signup forms and a generous free tier.

Free plan · Email marketing

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Hosting for Python FastAPI apps that deploys with one command and handles scaling and HTTPS for developers.

Since 2026

Developer tools · Developers

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Collects screenshots, HTML and stack traces when Puppeteer or Playwright scripts fail so developers can see what broke.

Since 2025

Uptime and monitoring · Developers

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Records a bug in the browser with logs, network calls and video, then passes it to AI coding agents over MCP.

Since 2025

Free plan · Developer tools · Developers

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Hosted service that logs incoming webhooks, reshapes their payloads and forwards them to Slack, Discord or any URL.

Since 2025

Developer tools · Developers

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Sets up and manages your own cloud server to deploy Django apps, with a dashboard, CLI and API.

Since 2021

Free plan · Developer tools · Developers

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Lets WordPress site owners and developers see, edit, pause and run the site's scheduled cron events.

Free · Developer tools · Developers

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Lets SaaS teams message users by email, push or SMS when they take certain actions inside the product.

Since 2021

Subscription · Email marketing · Software companies

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WordPress plugin that loads other plugins only on the pages that need them, to speed up sites and fix conflicts.

Free plan · Website builders