Castled
The Open Source Headless Reverse ETL Platform.
Overview
Castled is an open-source Reverse ETL platform designed for data activation. It allows companies to sync data from their data warehouse to various sales, marketing, and support tools. As a 'headless' platform, it is API-first and designed to be integrated into existing data workflows and infrastructure. Castled offers both a free, self-hosted open-source version and a managed cloud service, providing flexibility for companies of different sizes and with different security needs.
✨ Key Features
- Open Source
- Reverse ETL
- Headless, API-first design
- Self-hosted and Cloud options
- Visual data mapper
- Live debugging
🎯 Key Differentiators
- Open-source and API-first ('headless') approach.
- Flexibility of self-hosting for maximum data control.
- Focus purely on Reverse ETL.
Unique Value: Provides a flexible, open-source, and developer-friendly platform for Reverse ETL that can be self-hosted for complete data privacy and control, or used as a managed cloud service.
🎯 Use Cases (4)
✅ Best For
- Syncing a dbt model of product-qualified leads to a sales CRM.
- Creating a targeted audience in an ad platform from a customer segment in Snowflake.
- Embedding Reverse ETL functionality into an internal tool using Castled's APIs.
💡 Check With Vendor
Verify these considerations match your specific requirements:
- Companies looking for a platform with extensive ETL/ELT capabilities included.
🏆 Alternatives
Compared to closed-source tools like Hightouch and Census, Castled offers the transparency and flexibility of open source. Versus broader platforms like Airbyte, it maintains a dedicated focus on being the best tool specifically for Reverse ETL.
💻 Platforms
🔌 Integrations
🛟 Support Options
- ✓ Email Support
- ✓ Live Chat
- ✓ Dedicated Support (Enterprise tier)
🔒 Compliance & Security
💰 Pricing
✓ 14-day free trial
Free tier: Open-source version is free. Cloud has a free tier for up to 10,000 records.
🔄 Similar Tools in Reverse ETL
Hightouch
A leading Reverse ETL platform that empowers teams to activate customer data from their data warehou...
Census
Census syncs data from your cloud data warehouse to all your go-to-market tools, empowering teams to...
RudderStack
RudderStack is a customer data platform (CDP) built for developers, with Reverse ETL as a core capab...
Fivetran
Fivetran is a leader in automated data movement, primarily for ELT, but now offers Reverse ETL capab...
Workato
Workato is an iPaaS (Integration Platform as a Service) that provides extensive automation and integ...
Airbyte
Airbyte is an open-source data integration platform for ELT that has expanded to include Reverse ETL...