Zapier is a no-code automation tool that helps users automate critical tasks without disrupting their focus by providing a free Chrome extension with pre-made workflows called "Zaps". With Zapier, users can integrate with thousands of apps from partners like Google, Salesforce, and Microsoft to build secure, automated systems for business-critical workflows. The Chrome extension allows users to automate tasks such as sending emails, messages, and calendar events without opening their inbox or switching between tabs. Additionally, Zapier provides a feature to create custom solutions by connecting tools with public APIs or webhook capabilities, allowing users to customize their automation workflow with JavaScript or Python code.