No moat. Still in business.

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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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AI reviews of pull requests that teams can run on their own servers for free or use hosted, bringing their own model API keys.

Subscription · Developer tools · Developers

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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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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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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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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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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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A REST API that drives real browsers and returns structured page data and diffs, for developers building AI agents.

Subscription · Developer tools · Developers

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Keeps documentation in GitHub repos in step with the code and shares that context with teammates and AI coding agents.

Since 2026

Free plan · Developer tools · Developers

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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 that renders any URL to an image or PDF and builds og:image previews, so developers skip running Chrome.

Free plan · Developer tools · Developers

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Gives AI agents a US or Canadian phone number for calls and SMS, usable over MCP, REST or an agent skill.

Free plan · Developer tools · Developers

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Runs several AI reviewers on each GitHub pull request, drops noisy findings and posts a single review.

Free plan · Developer tools · Developers

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Hosted service that runs multi-step AI pipelines calling your own backend and streams progress to users.

Free plan · Developer tools · Developers

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Hosted Firecracker sandboxes for coding agents that pause with their memory kept and bill by the minute.

Subscription · Developer tools · Developers

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Records each model and tool call an AI agent makes so developers can rerun failures, branch from a step and test fixes.

Free plan · Developer tools · 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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An API that fills a designed template with JSON data and returns finished images or PDFs, such as banners, invoices and certificates.

Since 2024

Free plan · Design and images · Developers

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APIs and an MCP server that fetch link previews, page metadata, screenshots and clean Markdown from any URL.

Since 2014

Free plan · Developer tools · Developers

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An offline desktop SQL client for Postgres, MySQL, SQLite and others, with visual query plans and dashboards.

Free plan · Developer tools · Developers

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Feature flags for gradual rollouts that open a pull request to remove each flag from your code once it is done.

Free plan · Developer tools · Developers

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An API that checks uploaded images for nudity so app makers can moderate user content and pass store review.

Free plan · Developer tools · Developers

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Tests your web app the way a user would and flags broken signup, login or checkout flows after each change.

Subscription · Developer tools · Developers

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One subscription to a catalogue of ready APIs for documents, verification, media and AI tasks, aimed at developers building products.

Since 2023

Free plan · Developer tools · Developers

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Generates API docs, client libraries in ten languages and an MCP server from your OpenAPI file, plus usage monitoring, for API providers.

Free plan · Developer tools · Developers

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Code review tool that splits pull requests into ordered chapters so reviewers follow changes faster.

Since 2026

Subscription · Developer tools · Developers

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Draws your existing Mermaid diagram source with tidier layout and type, exporting to SVG or PNG.

Since 2026

Free plan · Design and images · Developers

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Gives a team one shared set of coding rules for all its AI assistants and agents, with review and audit logs.

Free plan · Developer tools · Developers

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A desktop workspace where an AI agent helps hardware makers read datasheets, lay out KiCad boards and write firmware.

Free plan · Developer tools · Developers

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Draw software architecture as C4 diagrams in the browser and let coding agents read the model over MCP.

Free plan · Developer tools · Developers

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Cloud coding agents take a task, change code across repos, fix failing CI and hand back a pull request with a live preview.

Free plan · Developer tools · Developers

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An API that checks signup email addresses for bad format, dead mailboxes and throwaway providers, paid by credit packs.

Free plan · Developer tools · Developers

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Upload an OpenAPI or Postman file to get a chat agent that lets your users run your software's actions in plain language.

Free plan · Developer tools · Software companies

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Schedule feature releases, roll out to a share of users and undo changes in one click, hosted in Germany.

Free plan · Developer tools · Developers

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An API that returns postal code data for over 200 countries, with distance and radius searches, for developers building location features.

Free plan · Developer tools · Developers

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Watches your AI agent's real traffic, finds where it fails customers and opens tested pull requests with fixes.

Since 2026

Subscription · Uptime and monitoring · Developers

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Hosted backend that takes in webhooks from Stripe, Shopify and others, stores them and runs your code with queues, cron and retries.

Free plan · Developer tools · Developers

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Continuous integration and delivery service that runs builds and tests for software teams, billed by usage.

Pay as you go · Developer tools · Developers

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An API and MCP tool that turns Markdown or HTML into clean PDF files for developers and AI agents.

Free plan · Documents and e-signature · Developers

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Checks EU VAT numbers through VIES and returns the consultation number as audit proof, plus company data and VAT rates.

Free plan · Developer tools · Accountants and bookkeepers

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Screenshots UI changes in pull requests and uses an AI judge to separate intended changes from regressions.

Free plan · Developer tools · Developers

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Stores the reasoning from AI coding chats with each git commit and posts it to pull requests for team review.

Free plan · Developer tools · Developers

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Desktop and web client for querying and editing SQL and NoSQL databases such as PostgreSQL, MySQL and MongoDB.

Since 2021

Free · Developer tools · Developers

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Makes social share images for blogs, docs and SaaS pages from a single URL with your title and theme.

Free plan · Design and images · Creators and writers

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An API and SDKs that let AI applications store, recall and forget long-term user context.

Since 2026

Free plan · Developer tools · Developers

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Compares UI screenshots from your CI on each GitHub pull request so a reviewer can approve or reject every visual change.

Free plan · Developer tools · Developers

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Hosts Docker containers on AWS with automatic builds, SSL and domains, plus a free tier and GPU options.

Free plan · Developer tools · Developers