No moat. Still in business.

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Draw system or process diagrams that viewers click through one step at a time, then share or embed them on any site.

Since 2026

Free plan · Design and images · Developers

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Hosted STUN and TURN servers across 12 regions so WebRTC calls and data get through firewalls and strict networks.

Free plan · Developer tools · Developers

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A Chrome extension that captures an element's HTML, CSS, screenshot and errors as markdown to paste into Claude Code or Cursor.

One-off payment · Developer tools · Developers

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A Mac menu bar app with an iPhone companion that mirrors your local dev site, keeping reloads and scrolling in sync.

One-off payment · Developer tools · Developers

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Shows Rails teams which requests are slow, flags N+1 queries and SQL timings, and tracks errors in one dashboard.

Free plan · Uptime and monitoring · Developers

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Error tracking and product analytics that works with your current Sentry SDK and lets coding agents read issues to fix them.

Free plan · Uptime and monitoring · Developers

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A Mac menubar app that lists your GitHub and GitLab pull requests and gives you a workspace to review them.

Free plan · Developer tools · Developers

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Web and desktop interface for browsing, troubleshooting, monitoring and governing Apache Kafka data streams.

Since 2023

Free plan · Uptime and monitoring · Developers

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A small Mac menu bar app that keeps your machine awake, lid closed or not, so long AI agent jobs keep running.

One-off payment · Developer tools · Developers

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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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iPhone app for controlling your Mac's desktop and terminal remotely over an encrypted direct connection, no SSH needed.

Developer tools · Individuals and families

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API that finds the right HS or HTS customs code for a product in 35 countries, for shipping and trade software.

Subscription · Developer tools · Online sellers

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A distraction-free writing page that saves notes on your device, works offline, and needs no account.

Free plan · Notes and knowledge · Individuals and families

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Schedules timed tasks, watches that your jobs and sites stay up, and checks email addresses, for apps on serverless hosts and AI agents.

Free plan · Uptime and monitoring · Developers

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Builds, tests and deploys code on Windows, Linux and macOS machines, hosted or on your own server.

Free plan · Developer tools · Developers

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Frontend teams can spin up hosted fake REST endpoints, import OpenAPI or Postman files, and fill responses with fake data.

Free plan · Developer tools · Developers

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A Slack assistant that learns your company policies and answers staff questions, and helps onboard new hires.

Notes and knowledge

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An API and CLI that runs a browser agent to fill forms, scrape behind logins and do web tasks for you.

Since 2025

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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Runs performance benchmarks in your CI and flags slowdowns on each pull request, for software teams.

Since 2023

Free plan · Developer tools · Developers

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A hosted graph backend that AI coding agents can query with typed JSON instead of SQL, reachable over MCP.

Since 2026

Free plan · Developer tools · Developers

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Crawls a website and gives AI agents an MCP endpoint, llms.txt and cited answers, plus stats on agent visits.

Free plan · SEO

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Lets your coding agent spin up a sandboxed Linux box with a public HTTPS address and ship your app there, no account needed.

Free plan · Developer tools · Individuals and families

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Tracks test coverage over time for your repos and flags untested code, free for open source projects.

Free plan · Developer tools · Developers

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A snippet library for developers and teams to save, label and share code, with plugins for editors, browsers and Slack.

Developer tools · Developers

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API that searches nine free stock photo sites by meaning with a single key; all images can be used without crediting anyone.

Free plan · Design and images · Creators and writers

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Run FFmpeg commands in the cloud through an API to convert, trim, caption and watermark video without installing anything.

Free plan · Video and audio · Developers

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Puts a folder of static files online with one command or through an AI agent, with built-in form collection.

Website builders · Individuals and families

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An AI on-call helper that looks through logs, metrics and code to find why production broke and suggest fixes.

Since 2026

Free plan · Uptime and monitoring · Developers

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Collects automated test results from many frameworks and pipelines in one place, with manual checks and release sign-off.

Free plan · Developer tools · Developers

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A REST API that gives current, forecast and historical weather for any location, plus severe weather alerts.

Free plan · Developer tools · Developers

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Send a number to an HTTP endpoint and get a chart of it over time, for small apps and side projects.

Since 2025

Uptime and monitoring · Developers

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Generates commit text, pull request summaries, release notes and audit docs from code diffs so engineers spend less time writing.

Free trial · Developer tools · Developers

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An API that parses, splits and pulls structured data out of messy documents for software teams and AI agents.

Since 2026

Documents and e-signature · Developers

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Desktop app for developers to query, browse, edit and chart data across Postgres, MySQL, MongoDB and other databases.

Since 2025

Free plan · Developer tools · Developers

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Follow feeds and save articles, then get short summaries and ask questions about what you have read.

Since 2023

Free plan · Notes and knowledge · Individuals and families

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Add a widget to a staging site so reviewers can pin comments on any element, then turn them into tickets or fixes.

Developer tools · Agencies

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A coding agent app that works out a spec with you first, then writes, checks and hands back code for approval.

Developer tools · Developers

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Checks VS Code and Open VSX extensions for risky code and permissions and gives developers a security report.

Since 2025

Security and passwords · Developers

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An API that converts HTML pages and URLs into PDF files for developers building apps.

Since 2015

Free plan · Documents and e-signature · Developers

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Caches GraphQL queries at the edge and adds usage metrics and abuse protection for teams running GraphQL APIs.

Since 2023

Free plan · Developer tools · Developers

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Web dashboard for setting up and running PHP and WordPress servers on your own cloud VPS without Linux skills.

Subscription · Developer tools · Agencies

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Shows automated test results in one dashboard and keeps manual test cases as files in GitHub.

Free trial · Developer tools · Developers

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Take notes tied to moments in YouTube videos, query the transcript and send your notes to Notion, Obsidian or Readwise.

Since 2020

Free plan · Notes and knowledge · Individuals and families

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An AI agent that looks into production alerts, finds the likely root cause and prepares fixes for engineering teams.

Free plan · Uptime and monitoring · Developers

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A credit-based API that returns Twitter/X profiles, tweets, followers, search results and trends for developers.

Pay as you go · Developer tools · Developers

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Lets a team's AI coding agents pass work to each other over MCP and pings a person in Slack when stuck.

Free plan · Developer tools · Developers

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An API that takes clean screenshots of any web page, with cookie banners removed and scheduled captures available.

Free plan · Developer tools · Developers