No moat. Still in business.

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An API that returns location, ASN, carrier and privacy details for any IP address, for developers and security teams.

Since 2014

Free plan · Developer tools · Developers

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Finds verified B2B contacts and runs email and LinkedIn outreach sequences so sales teams can book more meetings.

Since 2015

Subscription · CRM and sales · Agencies

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Coding tests in a real editor with automatic scoring, for companies and schools assessing software engineers.

Since 2016

Free trial · Hiring and recruiting · Software companies

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Shrinks JPG, PNG, WebP and other images through a web tool, API or CMS plugins so websites load faster.

Since 2013

Free plan · Design and images · Agencies

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Excel add-in for querying tables with SQL, scripting workbooks in C# and building custom Excel functions.

Since 2016

Free plan · Data and spreadsheets · Developers

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A gateway that checks AI model requests and agent tool calls for risks like prompt injection and logs evidence for teams shipping AI.

Since 2013

Free plan · Security and passwords · Developers

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A fast shared wiki where teams keep documents, notes and project boards together.

Since 2016

Projects and tasks

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Tracks keywords and AI answer mentions for B2B SaaS sites, then suggests and carries out approved SEO fixes.

Since 2015

SEO · Software companies

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Point your website's HTML form at this service to store submissions, filter spam and send them to email or other apps.

Since 2014

Free plan · Forms and surveys · Agencies

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Save and organise links, articles and videos into collections with tags, highlights and full text search.

Since 2014

Free plan · Notes and knowledge · Individuals and families

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Buys, installs and renews SSL certificates automatically and watches for certificates issued for your domains.

Since 2016

Subscription · Uptime and monitoring · 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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An API that returns live flight prices and airline booking links for developers building travel search or price alerts.

Since 2015

Free plan · Developer tools · Developers

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A hosted NoSQL database that gives you a REST API and admin screens for your data straight away.

Since 2016

Free plan · Developer tools · Developers

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An API for adding license keys, device activation and secure update delivery to desktop and on-premise software.

Since 2016

Developer tools · Developers

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Hosts apps, databases and AI models on isolated AWS setups with HIPAA controls built in, for digital health teams.

Since 2014

Developer tools · Health and clinics

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Finds and checks work email addresses for sales prospects, charging only for verified results.

Since 2015

Subscription · CRM and sales · Agencies

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Scans code for quality issues, security flaws and AI coding policy breaks across a team's repositories, with automated review.

Since 2012

Free trial · Developer tools · Developers

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A shared POSIX file system for Linux and Mac servers that stores its data in S3 or other object storage, with no storage cluster to run.

Since 2015

Subscription · Developer tools · Developers

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An API that turns addresses into coordinates and back, pulls places out of text, and serves maps for app builders.

Since 2012

Free plan · Developer tools · 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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Recruiting agent that finds, screens and introduces matching candidates to employers, and matches job seekers to roles.

Since 2014

Free plan · Hiring and recruiting · Software companies

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Drills you on keyboard shortcuts for editors and work apps with spaced repetition until they become habit.

Since 2012

Free plan · Courses and learning · Individuals and families

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Finds likely buyers from your website, writes them personal cold emails and handles follow-ups to book sales calls.

Since 2013

Pay as you go · CRM and sales · Agencies

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Translates websites, web apps and documents with machine and human translation, without managing translation files.

Since 2015

Website builders · Online sellers

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Runs automated tests against your APIs and websites after each deploy and on a schedule, with alerts on failure.

Since 2016

Uptime and monitoring · Developers

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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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APIs that turn public web pages into structured data, with crawling, web search and a knowledge graph for AI builders.

Since 2011

Developer tools · Developers

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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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Generates searchable API docs from C++ code and Markdown pages, with optional hosting, for C++ teams.

Since 2021

Developer tools · Developers

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Write JavaScript or Python functions in the browser and publish them as API endpoints in one click.

Since 2021

Free plan · Developer tools · Developers

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Desktop app that lets developers capture, inspect, edit and mock HTTP and HTTPS traffic for debugging and testing.

Since 2019

Developer tools · Developers

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A hosted headless CMS that lets editors manage structured content and developers pull it in through a GraphQL API.

Since 2017

Subscription · Website builders · Agencies

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Forwards mail sent to any address on your own domain to your inbox, with an API for apps that receive email.

Since 2021

Subscription · Transactional email

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Web tools for designers and developers to generate color palettes, gradients and light or dark UI themes.

Since 2019

Free plan · Design and images · Creators and writers

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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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A service catalog and scorecard tool that helps engineering leaders track ownership, standards and delivery across their services.

Since 2019

Developer tools · Software companies

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A server you run yourself that resizes and converts images on the fly from URL options, for web teams.

Since 2019

Free · Developer tools · Developers

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Library of recorded iOS app screens, onboarding and paywalls that app teams and their AI agents can search.

Since 2018

Design and images · Developers

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Builds architecture diagrams and system maps from prompts, code, cloud setups or docs, aimed at engineering teams.

Since 2021

Free plan · Design and images · Developers

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Desktop app for developers to browse, edit, query, import and export Firebase Firestore data on Mac, Windows or Linux.

Since 2021

Subscription · Developer tools · Developers

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Always-on profiling of CPU, GPU and memory in production so engineers can find slow code and cut server costs.

Since 2021

Free trial · Uptime and monitoring · 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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Deploys each labelled GitHub pull request as a live preview environment on your own Lightsail or Hetzner servers.

Since 2020

Developer tools · Developers

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Gives a public web address to a server running on your own machine over SSH, for developers testing webhooks and demos.

Since 2017

Free plan · Developer tools · Developers

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Sends alerts to on-call staff, handles their rotas and runs status pages so tech teams can respond to outages quickly.

Since 2020

Free trial · Uptime and monitoring · Developers

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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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Lets data teams build reports and dashboards from SQL and markdown, with a hosted option and an agent for questions.

Since 2021

Data and spreadsheets · Developers