No moat. Still in business.

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Issue tracking and project planning for software teams, with boards, sprints, roadmaps and AI agent handoffs.

Since 2016

Free plan · Projects and tasks · Developers

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Draw electronic schematics and run analog and digital circuit simulations in the browser, with no install needed.

Since 2012

Design and images · Schools and tutors

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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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No-code builder for chatbots and AI agents on websites and WhatsApp that qualify leads and answer customers.

Since 2017

CRM and sales

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Build business processes from AI agents, approval tasks, forms and tables without code, with people reviewing key steps.

Since 2021

Automation and integrations

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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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Keeps pull request discussions in sync across GitHub, Slack and VS Code so dev teams and AI agents review code faster.

Free plan · Developer tools · Developers

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Shared Markdown notes and docs that a team and its AI agents can write and edit together in real time.

Free plan · Notes and knowledge · Developers

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Detects AI agents logging into your SaaS app, masks private fields and asks the account owner before exports or payments.

Free trial · Security and passwords · Software companies

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Build AI chat agents for support or sales and run them on your website, Slack, WhatsApp and other channels.

Subscription · Customer support

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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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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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Saves every prompt, session and tool call from your coding agents in one place so teams can search and share them.

Developer tools · 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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AI agents play through your game or app on real phones and PCs to find bugs and run QA tasks.

Since 2024

Developer tools · Developers

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An API that pulls structured data out of web pages using AI, aimed at developers and AI agent builders.

Since 2024

Free plan · Developer tools · Developers

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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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AI agents that run browser tasks like logging into portals, filling forms and pulling out data, without fragile scripts.

Since 2024

Subscription · Developer tools

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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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Project board that shows every project as a column, with notes, Gantt charts and AI agent helpers for teams.

Since 2024

Free plan · Projects and tasks

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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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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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Secrets manager that lets dev teams and AI agents store, sync and deploy app keys and env variables across environments.

Security and passwords · Developers

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Builds and runs automated tests for Salesforce and other enterprise web apps from plain language, with no code.

Since 2024

Free trial · Developer tools · Software companies

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Builds automated workflows and AI agents that connect hundreds of apps, as a hosted service or on your own servers.

Free plan · Automation and integrations

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Runs background jobs, workflows and AI agent steps with retries and step logs, as an open source SDK and hosted cloud.

Since 2023

Free plan · Developer tools · Developers

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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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Gives AI assistants and agents authenticated access to over 1,500 apps so they can take actions, with a managed MCP gateway.

Pay as you go · Developer tools · Developers

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An API and SDKs that pull structured data from web pages using plain-language queries, for developers building AI agents.

Since 2024

Free plan · Developer tools · Developers

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Authorization service that lets engineering teams define access policies in one place and check permissions for users and AI agents.

Security and passwords · Developers

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A WordPress plugin that exposes your site to AI assistants over MCP so they can edit and maintain it, for agencies and freelancers.

Free plan · Website builders · Agencies

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Hosted service that runs your MCP servers behind a single URL, holds credentials and logs each tool call per client.

Since 2023

Free plan · Developer tools · Developers

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Lets a team describe a job in plain words and get an AI agent that uses its tools to handle routine admin.

Since 2024

Free plan · Automation and integrations

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Hosted isolated sandboxes where AI agents can run code safely, with snapshots, Git hosting and orchestration.

Since 2024

Free plan · Developer tools · Developers

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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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An iPhone and desktop app that lets developers run and follow AI coding sessions on their own computer from anywhere.

Since 2026

Developer tools · Developers

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Free plugin that gives AI assistants like ChatGPT or Claude controlled access to a WordPress site, with a log of everything they do.

Free · Automation and integrations · Agencies

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Model your data warehouse in YAML, then send business-term queries and get back one deterministic SQL statement.

Since 2026

Developer tools · Developers

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An API that lets AI agents search the web and licensed data sources and get cited answers and charts back.

Since 2025

Developer tools · Developers

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A catalogue of ready APIs for public websites, plus a builder to make your own, for AI agents and apps.

Since 2026

Free plan · Developer tools · Developers

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A proxy that watches AI agent calls, spots runaway loops and blocks requests once a spending limit is hit.

Since 2026

Free plan · Uptime and monitoring · Developers

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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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A team task manager where you can assign work to AI agents or mention them in comments and review what they produce.

Since 2026

Free plan · Projects and tasks

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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.

Since 2025

Subscription · Transactional email · Developers

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An API that sets up an AI agent with its own email inbox, secret vault, calendar, signed identity and USDC wallet.

Since 2026

Developer tools · Developers

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Keeps one parts library across all the circuit boards in a project, with live supplier prices and lists of what to order.

Since 2026

Free · Inventory and stock · Manufacturing

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Lets AI assistants and developers grab clean web page screenshots from 227 countries through MCP, a CLI or a REST API.

Free plan · Developer tools · Agencies

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A hosted API for appending to and reading from durable real-time streams, aimed at developers building agents and event pipelines.

Since 2025

Developer tools · Developers