Most businesses have data stored in a variety of locations, from in-house databases to SaaS platforms. To get a full picture of their finances and operations, they pull data from all those sources into a data warehouse or data lake and run analytics against it. But they don't want to build and maintain their own data pipelines.

Fortunately, it’s not necessary to build everything in-house. We put together this ETL tool comparison guide to help you choose the product that’s the best fit for your business.

Overview

Dell Boomi, Pentaho Data Integration (Kettle), and Stitch are all popular platforms. Here's a side-by-side look at how they stack up against each other.

Focus Application integration, workflow automation Business intelligence, data integration, ETL Data ingestion, ELT
Database replication Full table Full table; incremental via binary logs or SELECT/replication keys Full table; incremental via change data capture or SELECT/replication keys
SaaS sources 80 Only Salesforce and Google Analytics More than 100
Ability for customers to add new data sources Yes No Yes
Connects to data warehouses? Data lakes? Yes / Yes Yes / Yes Yes / Yes
Transparent pricing No No Yes
G2 customer satisfaction 4.2/5 4.2/5 4.8/5
Support SLAs Available Yes Available
Purchase process Requires a conversation with sales Requires a conversation with sales Options for self-service or talking with sales. Also available from the AWS store.
Compliance, governance, and security certifications HIPAA/HITRUST, PCI DSS, ISO 27001 None HIPAA, GDPR, SOC 2
Data sharing No Yes Yes, through Talend Data Fabric
Vendor lock-in Monthly or annual contracts Annual contracts. Open source version available Month to month or annual contracts. Open source integrations
Developer tools AtomSphere API for programmatic control of the AtomSphere platform, Connector SDK for writing custom connectors REST API Import API, Stitch Connect API for integrating Stitch with other platforms, Singer open source project

Let's dive into some of the details of each platform.

Transformations

Dell Boomi

Boomi handles process execution through procedures it calls shapes. Boomi supports a set of prebuilt transformations within its various shapes (such as text encoding, encryption/decryption, search/replace, and combining documents), and it lets users create custom preload transformations by coding JavaScript or Groovy scripts to convert data from the source application into a format that can be used by the destination.

Pentaho Data Integration (Kettle)

Pentaho supports a wide variety of pre- and post-load transformations through dragging and dropping more than two dozen kinds of operations onto its work area. In addition, users can drag and drop custom scripts in Python, Java, JavaScript, and SQL onto the canvas.

Stitch

Stitch is an ELT product. Within the pipeline, Stitch does only transformations that are required for compatibility with the destination, such as translating data types or denesting data when relevant. Stitch is part of Talend, which also provides tools for transforming data either within the data warehouse or via external processing engines such as Spark and MapReduce. Transformations can be defined in SQL, Python, Java, or via graphical user interface.

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Connectors: Data sources and destinations

Each of these tools supports a variety of data sources and destinations.

Dell Boomi

Like other application integration platforms, Boomi typically replicates data changes one at a time between multiple systems, as events happen, rather than pushing batches of data to a single central repository. Boomi supports two kinds of connectors, which it calls application and technology connectors. There are 80 application connectors (mostly to SaaS platforms, including data warehouses and data lakes) and 22 technology connectors (to databases and services like SFTP, HTTP, and IMAP). Developers can write their own custom connectors in Java using Boomi's Connector SDK.

Pentaho Data Integration (Kettle)

Pentaho can take many file types as input, but it can connect to only two SaaS platforms: Google Analytics and Salesforce. It connects to more than 40 databases, as sources or destinations, via JDBC, ODBC, or plugins.

Stitch

Stitch supports more than 100 database and SaaS integrations as data sources, and eight data warehouse and data lake destinations. Customers can contract with Stitch to build new sources, and anyone can add a new source to Stitch by developing it according to the standards laid out in Singer, an open source toolkit for writing scripts that move data. Singer integrations can be run independently, regardless of whether the user is a Stitch customer. Running Singer integrations on Stitch’s platform allows users to take advantage of Stitch's monitoring, scheduling, credential management, and autoscaling features.

Support, documentation, and training

Data integration tools can be complex, so vendors offer several ways to help their customers. Online documentation is the first resource users often turn to, and support teams can answer questions that aren't covered in the docs. Vendors of the more complicated tools may also offer training services.

Dell Boomi

All customers get email support, and customers on premier support plans get live chat and phone support. Dell also offers Boomi consulting, including onsite consulting for support. Documentation on Dell's help site is comprehensive. A community site provides additional peer and company support. Dell offers on-demand and instructor-led digital training.

Pentaho Data Integration (Kettle)

Pentaho provides support through a support portal and a community website. Premium support SLAs are available. There's no live support within the application. Documentation is comprehensive. Pentaho provides free and paid training resources, including videos and instructor-led training. A certification program is also available.

Stitch

Stitch provides in-app chat support to all customers, and phone support is available for Enterprise customers. Support SLAs are available. Documentation is comprehensive and is open source — anyone can contribute additions and improvements or repurpose the content. Stitch does not provide training services.

Pricing

Dell Boomi

Plans are billed monthly, starting with a rate of $549 per month. A 30-day free trial is available.

Pentaho Data Integration (Kettle)

Pentaho provides a 30-day trial download. Contract pricing isn't disclosed.

Stitch

Stitch has pricing that scales to fit a wide range of budgets and company sizes. All new users get an unlimited 14-day trial. After the trial, there's a free plan for smaller organizations and nonproduction workloads. Standard plans range from $100 to $1,250 per month depending on scale, with discounts for paying annually. Enterprise plans for larger organizations and mission-critical use cases can include custom features, data volumes, and service levels, and are priced individually.

Get started now

Which tool is best overall? That's something every organization has to decide based on its unique requirements, but we can help you get started. Sign up now for a free trial of Stitch.