rain ☆
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Description:
Command-line tool for working with AWS CloudFormation
Type: Formula  |  Latest Version: 1.24.1@0  |  Tracked Since: Dec 24, 2025
Links: Homepage  |  GitHub  |  formulae.brew.sh
Stars: 933  |  Forks: 88  |  Language: Go  |  Category: Devops
Tags: aws cloudformation devops infrastructure cli
Install: brew install rain
About:
Rain is a command-line interface (CLI) tool designed to simplify working with AWS CloudFormation. It provides advanced features like intelligent diffing of template changes, local testing of templates, and building templates from modules. The tool aims to streamline the CloudFormation workflow by making it faster and more intuitive than the standard AWS CLI.
Key Features:
  • Intelligent change detection and diffing for CloudFormation templates
  • Local testing and validation of templates without deploying
  • Support for CloudFormation modules and seamless packaging
  • Faster operations compared to standard AWS CLI commands
Use Cases:
  • Reviewing CloudFormation changes before deployment to prevent errors
  • Developing and testing CloudFormation templates locally
  • Packaging and deploying complex multi-file templates
Alternatives:
  • AWS CLI – AWS CLI is the official generic tool, while Rain offers specialized commands specifically optimized for CloudFormation workflows.
  • AWS CDK – CDK uses programming languages to define infrastructure, whereas Rain focuses on improving the YAML/JSON CloudFormation authoring experience.
Version History
Detected Version Rev Change Commit
Dec 24, 2025 11:22pm 1.24.1 0 VERSION_BUMP 297f3146
Jan 11, 2025 10:33am 0 VERSION_BUMP 08603cf3
Jan 11, 2025 4:02am 0 VERSION_BUMP 2969a1ce
Jan 3, 2025 12:35am 0 VERSION_BUMP bee4eb6a
Jan 2, 2025 6:34pm 0 VERSION_BUMP fd3c0087
Dec 18, 2024 10:50am 0 VERSION_BUMP 0f2f72a6
Dec 18, 2024 4:08am 0 VERSION_BUMP 9c4550ff
Dec 17, 2024 10:06am 0 VERSION_BUMP 05f0ad44
Dec 17, 2024 3:28am 0 VERSION_BUMP b08a7eb0
Dec 16, 2024 5:33pm 0 VERSION_BUMP b1f7ef64
Oct 30, 2024 8:21am 0 VERSION_BUMP 6924f96f
Oct 30, 2024 1:38am 0 VERSION_BUMP d00ffd99
Oct 23, 2024 1:23am 0 VERSION_BUMP b5e76efa
Oct 4, 2024 6:45am 0 VERSION_BUMP aebf522d
Sep 11, 2024 12:08am 0 VERSION_BUMP bd8c6cdc
Aug 8, 2024 3:31am 0 VERSION_BUMP 67de035b
Jul 18, 2024 10:17am 0 VERSION_BUMP 9076a60b
Jul 18, 2024 4:17am 0 VERSION_BUMP 85f3373a
Dec 16, 2023 6:04pm 0 VERSION_BUMP ffcb826c
Dec 16, 2023 12:03pm 0 VERSION_BUMP da217f26
Dec 12, 2023 8:41am 0 VERSION_BUMP d5abaea8
Dec 12, 2023 2:17am 0 VERSION_BUMP 71a292bd
Sep 22, 2023 1:50am 0 VERSION_BUMP bfa65d3e
Aug 12, 2023 1:16am 0 VERSION_BUMP e332459c
Aug 11, 2023 4:41pm 0 VERSION_BUMP f9eb136b
Jun 5, 2023 6:32pm 0 VERSION_BUMP 92505726
Mar 14, 2023 10:07pm 0 VERSION_BUMP 3ac54de0
Mar 14, 2023 10:07pm 0 VERSION_BUMP 9eaff411
Feb 16, 2023 10:02am 0 VERSION_BUMP ff9dc41b
Feb 16, 2023 10:02am 0 VERSION_BUMP c1bf3568
Feb 14, 2023 11:06pm 0 VERSION_BUMP 7c64855b
Feb 14, 2023 11:06pm 0 VERSION_BUMP d00560dc
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