Zapier

Webhook.site lets you easily inspect, test and automate any incoming HTTP request or e-mail with the visual Custom Actions builder or WebhookScript.

Huginn is a tool that allows you to create agents to perform tasks for you online. These agents can access and analyze information on the web, respond to events, and take actions on your behalf.

n8n is a tool for automating repetitive tasks and integrating multiple apps and services. It's open-source and includes a user-friendly graphical interface for creating workflows that connect different modules, each representing a specific task or action.

FolderMill is a file automation software for Windows for hot folder printing and converting files to PDFs or images. It monitors folders for new files and processes them automatically in real time according to pre-defined rules.

IFTTT (If This Then That) is a platform that connects multiple developers' apps, devices, and services to trigger one or more automations using those apps, devices, and services.

Make (formerly Integromat) is an automation platform that allows you to automate online workflows by connecting apps and services with smart codeless connections.