API Tools Software

Web scraping platform

Automate your work

The world's largest software registry

Open source Firebase alternative

AI voice generation

Modern, native, and friendly GUI tool for relational database management.

API platform for building and using APIs

Node.js database ORM

Transactional email service

Enterprise event streaming platform built on Kafka

Composable content platform

Identity platform for developers

The best web scraping API to avoid getting blocked, with AI-powered data extraction and headless browser management.

Instant GraphQL APIs on your databases

Search and discovery API

No-code backend builder

Open-source identity infrastructure

Secure tunnels to localhost

Supercharge Postgres with a modern data model, graph queries, Auth & AI solutions.

Observability for distributed systems

Open-source headless CMS

Real-time collaboration infrastructure

An in-memory data store for massive workloads, offering Redis/Valkey/Memcached compatibility and superior performance.

Email for developers

Open-source headless CMS and data platform

Activity feeds and chat API

API and synthetic monitoring for developers

Headless CMS and application framework

Authentication for modern apps

OpenAI's image generation AI available via API

GraphQL developer platform for building APIs

Serverless functions for Netlify sites

Chat and messaging API for apps

Real-time image processing

Load testing tool for developers

Open source scheduling

Connect APIs with code

AI search for developers

API development framework

API marketplace and hub

Open-source data integration platform for ELT pipelines

Realtime messaging infrastructure for chat, notifications, and live updates

Federated content platform with GraphQL

Secrets management

Open-source headless commerce platform

Lightning fast search

File uploads for TypeScript developers

The next-generation open-source JavaScript runtime for the modern web, built on web standards.

API client for REST and GraphQL

Shipping API for e-commerce

API gateway and platform

Localization management platform

Event-driven background jobs and workflows

AWS cloud emulator

Authentication infrastructure for developers

API documentation and developer portal

API design platform

Open-source headless commerce

Open-source identity management

Load testing for web applications

File upload and processing API

Open source API development

REST API client for VS Code

Shipping API for e-commerce

E-signatures made easy

Chat API for websites and apps

Headless commerce API for global brands

Headless commerce backend for developers

File uploading and processing API

API documentation platform

Documentation platform for product and API docs

Open-source user authentication

Distributed tracing and observability

Form backend with no server code

User-friendly command-line HTTP client

Passwordless authentication SDK

Build reliable AI apps with Helicone: AI Gateway & LLM Observability for debugging, routing, and analysis.

Open-source authentication with passkeys

Headless e-commerce for developers

Feature flag and configuration management

Backend as a service with visual app development

Technology lookup tool

Open-source WebRTC platform

Every thing works better together

Low-code backend platform

Open-source load testing tool

Form backend for static sites

Trace-based testing for distributed systems

API design, testing, and documentation in one platform

Design interactions on your phone

Form backend for developers

API mocking made easy

Form backend for static sites

Framework for serverless WebAssembly applications

GraphQL platform

Financial data API

Open-source API platform

Load testing toolkit

Mock API generator

High-performance web server

Production stack for Gen AI builders: AI Gateway, Observability, Guardrails, Governance, and Prompt Management.

Automate browsers at scale, bypass bot detectors, and generate PDFs/screenshots with ease.

Scale web scraping and collect data from any public website without handling proxies or CAPTCHAs.

Web scraping API for bypassing anti-bot measures and extracting data reliably.

A simple, open-source tool to replay HTTP requests for testing and debugging.

Rapid application development platform

Test, monitor, and visualize geospatial APIs to accelerate development and ensure reliability.

Serverless messaging and scheduling for reliable, asynchronous communication between services.

Reliable event infrastructure for webhooks and external event streams.

Send and receive webhooks with enterprise-grade reliability, security, and scalability.

The fastest, enterprise-grade headless content management system for easy, scalable, and powerful content delivery.

Debug gRPC, REST, SSE, and WebSocket APIs from a single, privacy-first workspace.

One-click integrations

A modern API platform built for the OpenAPI™ standard, offering developer tools and registry services.

Build, manage, and optimize real-time interactive applications at scale.

Real-time text-to-speech API with AI laughter, emotion, and ultra-low latency for voice agents.

The fast, secure, and offline API client that works seamlessly with Git.

Fast, reliable, and cost-effective blockchain infrastructure for Web3 builders and enterprises.

Enterprise-grade Web3 APIs for real-time blockchain data, powering wallets, compliance, AI, and next-gen finance.

Elevate your API development, testing, and monitoring with powerful and flexible tools.

The world's most popular open-source API testing tool for REST, SOAP, and GraphQL.

One holistic platform for real-time API intelligence, security, governance, and documentation.

Modify HTTP request and response headers directly from your browser for web development and debugging.

Turn your Android phone into a powerful SMS gateway for programmatic messaging.

Access real-time search engine results from Google, Amazon, Bing, and more via a robust API.

Scalable web scraping API for blockage-free data extraction from any website.

The fastest open-source API Gateway for microservices, offering high performance and linear scalability.

Generate stunning, low-maintenance, and engaging API documentation in seconds using AI.

Robust, resumable, and fault-tolerant file uploads for web browsers.

Integration infrastructure for developers to ship customer-facing connectors faster.

Developer infrastructure for building and managing AI-powered product integrations.

Ship customer-facing integrations in hours with a developer-first, native integration platform.

Fast, secure integrations for your products and AI agents, connecting to any third-party system.

Access comprehensive financial data and business intelligence via API.

Add retry, delay, queue, and schedule to HTTP requests without managing infrastructure.

Ship multi-channel notifications like a pro with an API and SDKs that hide complexity.

AI-powered OCR APIs for intelligent document capture, extraction, and fraud detection.

Open-source Webhooks-as-a-Service for reliable, secure, and scalable event delivery.

Streamline code reviews and enhance collaboration for faster, higher-quality software delivery.

The self-hosted developer productivity platform for building forms and APIs within your applications.

Get instant API playgrounds to test Rest, GraphQL, WebSocket and SocketIO APIs.

Build, test, and debug APIs faster with a lightweight, open-source API client and web debugger.

AI Search Infrastructure for Enterprise Teams to build trusted apps and agents.

Open-source headless browser API for controlling cloud-based browser fleets.

Accelerate your AI with developer-friendly APIs for performance and cost-efficient machine learning inference.

Unlock HR and payroll data connectivity to streamline operations and scale your business.

Build integrations with APIs using SQL, treating them like a Postgres database.

A lightweight, zero-dependency runtime validator for TypeScript static types.

The API for developers to automate website screenshots, HTML rendering, and video generation.

Automate PDF generation with dynamic data and customizable templates via a simple REST API.

The world's most advanced HTML to PDF API for high-quality, accessible document conversion.

Integrate real-time chat, voice, video, and AI copilots into any application or website.

Empower your AI agents with real-world skills and seamless integrations across 10,000+ tools.

Command AI with Zen Clarity: A Universe of Models, Unified in One Gateway.

Automate pixel-perfect PDF and image generation with a drag-and-drop template editor and API.

Real-time voice and video engagement for immersive digital experiences.

The multichannel notification platform for transactional and lifecycle messages.

The complete blockchain developer platform for building and scaling crypto applications.

No-code integration platform

The integration infrastructure for the age of AI, connecting apps and automating workflows.

Send instant push notifications to your phone or desktop via simple HTTP requests.

Design and ship best-practice GraphQL backends atop existing data sources and APIs with AI assistance.

Secure, scale, and optimize your GraphQL APIs with global edge caching and real-time insights.

Instantly create powerful, extensible, and performant GraphQL APIs from your PostgreSQL database.

Instantly generate secure REST APIs for any data source, modernizing legacy systems for AI.

The world's most powerful suite of high availability blockchain APIs and developer tools for Web3.

Build ultra low latency voice, video, and AI conversations with global WebRTC infrastructure.

Govern, optimize, and monetize AI and LLM usage with a unified platform.

Streamline document workflows, collect data, and embed e-signatures with powerful automation.

Integrate multi-carrier shipping capabilities into any system with a single API.

Live video infrastructure for building customizable and scalable real-time video experiences.

Fine-grained, scalable authorization for applications and APIs, delivered in minutes.

Open-source client for parallel work with Claude Code, featuring a calm UI and powerful features.

Automate and scale PDF document generation from templates with a flexible API and web app.

Comprehensive API stack for SEO and digital marketing data solutions.