Free tier

GrowthBook

GrowthBook is a warehouse-native platform for experimentation, feature flags, and product analytics. It connects to a company’s data warehouse and supports A/B tests, feature flag management, product analytics, and SDK-based evaluation across web, mobile, server, and edge environments.

Gumlet

Gumlet is a media hosting and delivery platform with separate products for video hosting, video APIs, image optimization, and video DRM. The video product supports hosting, customizing, securing, and ...

HackMD

HackMD is a collaborative Markdown workspace for teams, communities, and projects. It provides real-time editing with multiple cursors, comments and mentions, version history, templates, GitHub integr...

Have I Been Pwned

Have I Been Pwned is a breach notification service that lets users check whether an email address appears in known data breaches. It also provides domain monitoring, password breach checks, and an API for programmatic email searches.

HCP Terraform is HashiCorp’s cloud-based infrastructure as code platform for managing Terraform workflows at scale. It helps teams collaborate on provisioning, automate runs, and coordinate infrastructure changes across environments.

Healthchecks.io

Healthchecks.io is a cron job monitoring service that works by assigning each background job a unique ping URL. Scheduled tasks, backups, reports, and other jobs send an HTTP request to that URL when they run; if a ping does not arrive on time, the service sends an alert.

Heap

Heap is a product analytics platform that automatically captures user interactions on websites and mobile apps, then organizes the data into charts, funnels, journeys, retention views, dashboards, ses...

Helploom

Helploom is a customer support platform that combines a live chat widget, shared inbox, help center, and AI chatbot. The widget can be added to a website with a copy-paste script, and logged-in user details can be passed through an identify API call.

HeroTofu

HeroTofu is a form backend service for static sites and other frontends that need to collect HTML form submissions without writing server-side code. A form posts to a HeroTofu endpoint, and the servic...

Hetzner DNS Management

Hetzner DNS Management is a DNS hosting and zone management service in Hetzner Console. It lets users list, add, modify, and remove DNS zones and records through the web interface or the REST API.

Hex

Hex is an AI analytics platform that combines collaborative notebooks, conversational self-serve analytics, and interactive data apps in one workspace. The product connects to warehouse data, supports...

Hexclave

Hexclave is an open-source platform for user authentication, payments, and product signals. It provides hosted and self-hosted options, with documentation, SDKs, and dashboard access for integrating identity, messaging, analytics, and related product infrastructure.

highlight.io

Highlight.io is an open source, full-stack monitoring platform for modern web applications. It brings together session replay, error monitoring, logging, traces, and dashboards in a single product so engineering teams can understand issues across the entire stack.

Hightouch

Hightouch is a customer data and marketing activation platform that connects to a data warehouse and syncs data to 300+ downstream tools. It includes Reverse ETL, audience building, identity resolutio...

HiveMQ Cloud

HiveMQ Cloud is a fully managed MQTT broker platform hosted by HiveMQ. It provides a serverless free plan for learning and experimentation, plus paid Starter and Enterprise plans for larger deployments.

Honeybadger

Honeybadger is an application monitoring service for Ruby on Rails, Elixir, PHP, Python, JavaScript, Node.js, and other platforms. It combines error tracking, structured logging, uptime monitoring, cron and heartbeat monitoring, status pages, and APM-style dashboards in one hosted product.

Honeycomb

Honeycomb is an observability platform for collecting and querying logs, metrics, traces, and other structured telemetry. It supports distributed tracing, BubbleUp analysis, OpenTelemetry ingestion, query history, permalinks, and Honeycomb Metrics.

Hook Relay

Hook Relay is a webhooks-as-a-service platform that accepts webhook requests, stores them in DynamoDB, and queues them in SQS for delivery to a customer-supplied URL. It includes delivery retries with...

Hook0

Hook0 is an open-source webhooks-as-a-service platform that lets developers send webhook events through a REST API. It handles delivery attempts, retries, HMAC signatures, TLS encryption, replay defense, monitoring, and replay from a dashboard or API.

Hookdeck Event Gateway

Hookdeck Event Gateway is a webhook and event ingestion service that receives inbound HTTP requests, applies routing and filtering rules, queues events, and delivers them to downstream destinations. I...

Hound is an automated code review tool for GitHub pull requests. It comments on code quality and style issues when a pull request is opened or updated, so teams can review changes against configured style guides and linters.

httpSMS

httpSMS is a service that turns an Android phone into an SMS gateway with a programmable HTTP API. It lets developers send and receive SMS messages through a companion Android app installed on a phone...

httpsms.com

httpsms.com is a sandbox web interface for receiving SMS messages on a shared US phone number. It exposes a public inbox that can be used anonymously to view incoming and outgoing text messages in the browser.

HubSpot

HubSpot is an agentic customer platform that brings marketing, sales, customer service, content, data, and commerce tools together in one system. It is designed to help businesses attract leads, manage customer relationships, automate workflows, and grow revenue with connected data and built-in AI.

Hugging Face is an AI collaboration platform where the machine learning community builds, shares, and discovers models, datasets, and applications. It provides a central hub for experimentation, deployment, and collaboration across a wide range of machine learning workflows.

Huly

Huly is an open-source team workspace that combines project management, task planning, chat, documents, inbox, and virtual office features in one product. It includes team planner views, notifications...

Hygger

Hygger is a project management platform with Kanban boards, task lists, timelines, roadmaps, backlog management, and Scrum support. The product includes swimlanes, WIP limits, sub-columns, story points or hours estimation, burndown charts, velocity tracking, and sprint release reports.

Hygraph

Hygraph is a headless CMS that exposes structured content through APIs for developers and content teams. The platform supports GraphQL-based content delivery, content modeling, asset management, localization, workflows, and environment-based development.

Hypertune

Hypertune is a feature flag and experimentation platform with type-safe SDKs, Git-based version control, analytics, and app configuration. It provides flag evaluation, targeting rules, experiments, ev...

IBM Cloud Free Tier

IBM Cloud Free Tier is an IBM Cloud account offering that includes access to more than 40 always-free products with Lite plans and no expiration date. The account is pay-as-you-go for billable usage b...

Icedrive

Icedrive is a cloud storage service with web, desktop, and mobile apps. It provides file storage and access across devices, including a desktop virtual drive that mounts cloud storage as if it were a ...

IFTTT

IFTTT is a no-code automation service that connects apps and devices through Applets. Users choose a trigger, an action, and optional customization to build workflows across services such as Google Calendar, Sheets, Email, Webhooks, and smart home devices.

Ilograph

Ilograph is an interactive diagramming platform for documenting and explaining system architecture with depth and clarity. It helps teams create zoomable, model-based diagrams that can move from high-level overviews to detailed component interactions in a single visual system.

Image Charts

Image Charts is a chart generation API that renders charts as images from chart configuration data. It supports chart templates, custom URLs, embed codes, and integrations with Zapier and Make for automating chart creation in emails, reports, PDFs, and other workflows.

ImageEngine Kube

ImageEngine Kube is a self-hosted image optimization engine that runs in Kubernetes or Docker inside the customer’s own infrastructure. It processes image requests through the customer’s CDN and origi...

ImageKit.io

ImageKit.io is an image and video API with an integrated digital asset management (DAM) layer. It connects to existing storage such as S3, Google Cloud Storage, Blob Storage, or HTTP origins, then serves media through URL-based optimization, transformation, and delivery APIs.

ImgBB

ImgBB is an image hosting service that lets users upload images from a computer, by drag and drop, paste, or image URL, and then share direct image links, BBCode, or HTML thumbnails. It also exposes an API and a browser plugin for uploads.

Imitate Email

Imitate Email is a sandbox email server for software teams. It provides an embedded email viewer and test mailbox workflow for developers, QA teams, and integration testing, with access through browser extensions, a web widget, SMTP, IMAP/POP3, and web sockets.

ImprovMX

ImprovMX is an email forwarding service for custom domains. It routes incoming mail to one or more destination addresses, and also offers SMTP sending for outbound mail from the same domain.

Inboxes App

Inboxes App is a Chrome browser extension that creates temporary disposable email addresses inside the browser. Incoming messages for each generated address are shown in the extension, and the address can be deleted when it is no longer needed.

IncidentHub

IncidentHub is a status page monitoring service that tracks third-party vendors, including cloud, SaaS, utility, and private status endpoints. It ingests public status pages, private status pages, and...

IndexPlease

IndexPlease is a URL indexing platform that helps websites get discovered faster across search engines such as Google and Bing. It automates the process of monitoring site URLs, submitting sitemaps, a...

Infisical

Infisical is an open-source platform for managing application secrets, certificates, SSH keys, privileged access, and secret scanning across development and production environments. It provides a dash...

Inngest

Inngest is a workflow orchestration platform for durable execution of backend code, background jobs, endpoints, and AI agents. It wraps functions in steps to add retries, recovery, throttling, batchin...

Insights

Insights is a privacy-focused web analytics platform for developers. It tracks page views and custom events through a JavaScript snippet, with support for anonymous page-view collection, event tracking, and configurable tracking logic for web apps.

Insomnia is an AI-native API collaboration platform for developers who design, test, debug, and manage endpoints across REST, GraphQL, gRPC, WebSocket, Socket.IO, and SSE workflows. It combines an API...

Inspector

Inspector is a PHP application monitoring tool that traces transactions, events, exceptions, slow queries, and external calls from code instrumentation rather than server-side agents. It supports Lara...

Instatus is a status page and incident management service that lets teams monitor services, coordinate incident response, and publish service status updates for customers. The pricing page lists Start...

Integrately

Integrately is an automation platform that connects 1,500+ apps and provides 20 million+ ready automations. Users select a prebuilt automation, connect accounts, and activate the workflow without building it from scratch.

Interactive CV

Interactive CV is a web-based resume and job-search tool that lets users upload a CV, analyze a job description or job URL, and generate an ATS-oriented resume match report. The product also includes ...

Internxt

Internxt is an encrypted cloud storage service with desktop, mobile, and web apps. The service uses zero-knowledge encryption, end-to-end encryption, AES-256 for data at rest, and TLS 1.3 for data in ...

Invantive Cloud

Invantive Cloud is an online data integration platform that exposes more than 105 cloud and on-premise data sources through a virtual SQL layer and OData access. It is used to combine data for reporting, dashboards, web apps, and automated exchange between applications.

IP Geolocation API

Abstract API’s IP Geolocation API provides location intelligence for IP addresses, helping developers identify where a user is connecting from and enrich requests with useful contextual data.

IP-API.com

IP-API.com provides an IP geolocation API that returns location and network metadata for an IP address or domain. The service supports JSON, XML, CSV, newline-separated, and PHP response formats, and ...

IP.City

IP.City provides an IP geolocation API that converts an IP address into location data such as country, city, latitude, longitude, and ISP or organization details. It also includes a user-agent decoding API that identifies browser, operating system, and device information from a user-agent string.

Ip2Geo

Ip2Geo is an IP-to-geolocation API service that converts IPv4 and IPv6 addresses into location data through a cloud dashboard, REST API, and SDKs for Node.js, Bun, Deno, and other runtimes. The servic...

IP2Location.io

IP2Location.io is an IP geolocation API service that returns location and network data for an IP address through REST endpoints. The service includes IP Geolocation API, Domain WHOIS API, and Hosted Domain API, with SDKs and integrations for common developer workflows.

ipapi.is

ipapi.is is an IP address API that returns geolocation, ASN, company, hosting, VPN, proxy, Tor, and abuse intelligence for IPv4 and IPv6 addresses. Requests are made to the hosted API endpoint and can...

ipbase.com

ipbase.com provides an IP geolocation API that returns location and network data for an IP address. The landing page shows lookup fields such as country code, country name, city, latitude, longitude, ASN, organization, ISP, IP range, security flags, and timezone details.

ipdata

ipdata provides an IP geolocation and threat intelligence API for enriching IP addresses with location, organization, usage, and risk data.