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A colorful illustration of a forest stream with rocks, plants, and a waterfall flowing into a calm pond.
An illustrated hand pulls a glowing white book from a colorful bookshelf filled with books.
An illustrated warehouse scene with stacked boxes, a forklift, and sunlight streaming through large windows.
An abstract illustration of colorful 3D cubes stacked in various sizes with white clouds drifting between them.
Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.

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Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.
Illustration of a hand reaching through lush foliage with glowing star-like lights surrounding it.
Illustration of a wooden box filled with colorful geometric blocks.
Illustration of a person holding a futuristic mobile phone with a wavy pink design while sitting at a table with a laptop, pen, and coffee while riding transit, overlooking a scenic landscape.
A colorful illustration of a forest stream with rocks, plants, and a waterfall flowing into a calm pond.
An illustrated hand pulls a glowing white book from a colorful bookshelf filled with books.
An illustrated warehouse scene with stacked boxes, a forklift, and sunlight streaming through large windows.
An abstract illustration of colorful 3D cubes stacked in various sizes with white clouds drifting between them.
Illustration of pipes channelling water through a vibrant pond filled with lotus flowers and lily pads.
Illustration of a hand reaching through lush foliage with glowing star-like lights surrounding it.

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IntegrationsTemplatesUtilitiesBlogReads and reportsCustomer storiesVideosInteractive tour

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Use a RegEx builder with syntax highlighter

Retool makes it easy to build admin panels, dashboards, and utilities on top of any datasource or API. Our RegEx builder is built for quickly creating a set of string modifiers with customizable delimiters and assertion statements.

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Use a RegEx builder with syntax highlighter
Retool's RegEx Generator

Retool's RegEx Generator

Unlike most builders you’ll find online, our RegEx Generator gives you an unlimited number of modifiers and string entries. It is built for quickly creating a set of string modifiers with customizable delimiters and assertion statements. The result: a simple declarative regex that you can copy and use on your text corpus that can generate the perfect app for your workflow in Retool.

Explore Retool's Utility Library

Explore Retool's Utility Library

Retool's utility library compiles out-of-the-box developer utilities to help with common frontend and backend tasks. Convert JSON to CSV, build dummy data sets with our REST API Generator, or generate RegEx with Syntax highlighter—for free.

Build any internal app with 100+ drag and drop components.

Build any internal app with 100+ drag and drop components.

You can use any of Retool's library of 100+ drag and drop components—think tables, buttons, text inputs, etc, or write custom code for specific functionality. Connect to any database or API via Retool's query GUI, and you've got yourself a working internal tool in no time.

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From startups to Fortune 500s, the world's most effective teams use Retool to build custom business software. Our customers

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Supported operations for REST API

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GET
Include headers, URL params, and cookies.

POST
Include headers, URL params, a request body, and cookies. Our GUI lets you define your body as structured keys and value or raw JSON.

PUT
Include headers, URL params, a request body, and cookies.

DELETE
Include headers, URL params, a request body, and cookies. By default, only runs in response to a user interaction.

PATCH
Include headers, URL params, a request body, and cookies.

Join with other datasources
Easily join with other Retool connected datasources like Stripe or AWS S3.

Retool provides the building blocks for any internal tool

Whether you're building a basic CRUD interface or refund management software, internal tools have the same building blocks: tables, text boxes, dropdowns, etc. Retool gives you a simple way to connect these building blocks with your own data sources so you can assemble any custom internal tool, fast.

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Start building an internal tool or customer portal in under 10 minutes

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Platform
AgentsNew
AI primitivesNew
App builder
Mobile apps
Workflows
Database
External apps
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Enterprise
Startups
Agencies
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Use cases
Integrations
Templates
Utilities
Blog
Reads and reports
Customer stories
Videos
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Retool University
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Company
About
Careers
Partners
Newsroom
Start for freeStart for freeBook a demoBook a demo
Terms of usePrivacy policySecurityTrust CenterSite map
© Retool 2025