No moat. Still in business.

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Posts a Slack alert when Apple or Google approves or rejects your app, or a TestFlight build is ready.

Since 2023

Subscription · Uptime and monitoring · Developers

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Sits in front of your server to receive webhooks from Stripe, Shopify and others, logging each one so missed events can be resent.

Free plan · Developer tools · Developers

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Add-on pack for Contact Form 7 that adds spam blocking, saved entries, redirects, webhooks and payments.

Free plan · Forms and surveys

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A free, quick kanban board for tracking bugs, ideas and small projects, which you can also run on your own server.

Free · Projects and tasks

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An API that gives AI agents their own email inboxes to send and receive mail, with webhooks and scanning for prompt injection.

Free plan · Transactional email · Developers

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An API that adds open and click tracking to emails from any provider and sends the events to your app by webhook.

Free plan · Transactional email · Developers

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A Mac terminal manager for developers running several coding agents, showing which session is waiting for input.

Since 2026

Developer tools · Developers

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A small headless CMS for writing and publishing blog posts and media, pulled into your site by API.

Free plan · Website builders · Creators and writers

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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 native Mac app for developers to set up local mock endpoints, inspect incoming requests and test webhooks and API failures.

Developer tools · Developers

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Dashboard for email sent through Amazon SES showing bounces, deliveries, complaints, opens and clicks, run yourself or hosted.

Free · Transactional email · Developers

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Gives you one fixed webhook URL that forwards Stripe and Paddle events to whichever branch deployment you are testing.

Free plan · 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.

Free plan · Developer tools · Developers

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A hosted service that sends your app's webhooks with retries, logs and debugging so developers need not build it.

Free plan · Developer tools · Developers

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A Mac notes app that keeps text, markdown and CSV files in a local folder and syncs them through git.

One-off payment · Notes and knowledge · Individuals and families

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An API and MCP server that lets AI agents send contracts and collect two-party signatures by email.

Free plan · Documents and e-signature · Developers

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Gives static website forms a hosted endpoint that stores submissions, filters spam and sends alerts to email, Slack or Discord.

Forms and surveys · Developers

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A notes and wiki tool built on plain Markdown files you control, for personal notes, team wikis or published docs.

Notes and knowledge · Individuals and families

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A quick note-taking app for Mac and iPhone that saves your writing as plain Markdown files on your own device.

Since 2025

Notes and knowledge · Individuals and families

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One MCP server that gives AI agents hundreds of sourced data streams like weather, markets and releases, with full history.

Developer tools · Developers

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Receives webhooks for your app, retries failed deliveries and keeps a replayable history so no events get lost.

Free plan · Developer tools · Developers

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Sends you new business websites in your market each week, filtered by keyword or tech, with their contact details.

Since 2026

Subscription · CRM and sales · Agencies

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A small self-hosted support desk with chat-style tickets, a customer portal and staff queues, running as one Go binary.

Free · Customer support

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A native Markdown notes app for Mac, iPhone and Windows that stores notes in your own cloud, with Kanban boards.

Notes and knowledge · Individuals and families

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Gives each service a private webhook URL and turns incoming JSON into plain English iPhone alerts, with sensitive fields masked.

Uptime and monitoring · Developers

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Mac app that opens a floating note on a shortcut so you can jot a thought, saved as a local markdown file.

Free · Notes and knowledge · Individuals and families

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Lets merchants invoice in Monero and have customers pay straight into the merchant's own wallet, with APIs and webhooks.

Payments and checkout · Shops and retail

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A Chrome extension that gives you a webhook URL, so automation tools can open links as new tabs in your browser.

Automation and integrations · Developers

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A form endpoint for React, Vue or plain HTML sites that stores submissions, blocks spam and emails or forwards each one.

Free plan · Forms and surveys · Developers

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A free markdown notes app you run on your own server, with wikilinks, a graph view, diagrams, math and an MCP link for AI tools.

Free · Notes and knowledge · Individuals and families

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Self-hosted notes and checklists app that keeps everything as Markdown files on your server, with kanban boards.

Free · Notes and knowledge · Individuals and families

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A light markdown notes app with nested pages, custom templates and searchable PDFs that you can share with a team.

Free plan · Notes and knowledge · Individuals and families

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A JSON API and webhooks that deliver new SEC filings and insider trades to fintech apps and quants.

Free plan · Developer tools · Developers

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Send app events with one HTTP call, then search them and get them delivered to Slack, Discord, Telegram or webhooks.

Free plan · Developer tools · Developers

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An email API that developers use to receive mail on their own domain as JSON, route it and reply in the same thread.

Subscription · Transactional email · 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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Markdown note app for every device that stores plain files and syncs through Git, GitHub, iCloud or your own server.

Since 2024

Notes and knowledge · Individuals and families

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Hosted service that receives, logs and retries webhooks, with a CLI for local testing and a typed SDK.

Since 2024

Developer tools · Developers

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A free open-source desktop notes app built around Markdown, with notebooks, encrypted notes, mind maps and export.

Free · Notes and knowledge · Individuals and families

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A form backend for developers that adds front-end validation, autoresponders and spam blocking, with a HIPAA option.

Free trial · Forms and surveys · Health and clinics

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Uptime checks you set up through an API, a GitHub Action or an AI agent, with alerts when a site goes down.

Free plan · Uptime and monitoring · Developers

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An API that renders HTML and saved templates into PDFs and screenshots, for developers who need documents from their apps.

Pay as you go · Documents and e-signature · Developers

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Send your own HTML form to a hosted endpoint that stores entries, holds back spam and forwards them to email or other tools.

Forms and surveys · Agencies

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Fires webhooks once or on a cron schedule in your timezone and alerts you when a call fails.

Since 2019

Free plan · Developer tools · Developers

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Describe the data you want from a website and get structured results plus webhook alerts when it changes.

Free plan · Developer tools · Developers

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Gives AI agents their own email addresses and inboxes through an API, hosted in the EU, for developers building agents.

Since 2026

Free plan · Transactional email · Developers

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A small Mac app for jotting down passing thoughts and reminders, saved as a plain markdown file you can open anywhere.

One-off payment · Notes and knowledge · Individuals and families

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A note app on an endless canvas with nested pages, Markdown, sketching and live collaboration, for people who think visually.

Subscription · Notes and knowledge · Individuals and families