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Comparing Qlik Replicate with Weld

Carolina Russ
Carolina Russ5 min read
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What is Qlik Replicate

Qlik Replicate (formerly Attunity) is a change data capture (CDC) and replication platform that moves data in real-time from databases, mainframes, and cloud sources into data warehouses, data lakes, and analytics platforms. It provides a graphical UI to configure replication tasks, automated schema change handling, and supports a wide range of sources (Oracle, SQL Server, DB2, MongoDB) and targets (Snowflake, Redshift, BigQuery, Kafka).

Pros

  • High-performance CDC with minimal source impact; supports heterogeneous sources and targets.
  • Automated schema change handling—table/column additions in source auto-reflected in target.
  • GUI-based configuration for tasks, monitoring dashboards, and robust error handling.
  • Cloud-native or on-prem installations; integrates with Qlik’s broader ecosystem (e.g., Qlik Sense).

Cons

  • No built-in ELT/transformations—only replication. Users need a separate tool for data transformations.
  • Enterprise pricing (per-core licensing) can be high, particularly for large-scale replication across many tables.
  • Learning curve for setting up advanced replication scenarios (e.g., multi-target replication, filters).

Qlik Replicate Documentation:

What I like about Qlik Replicate

Replicate’s CDC capabilities ensure minimal latency and zero-impact on source databases. Schema changes in the source are automatically captured and propagated to targets.

What I dislike about Qlik Replicate

Licensing is expensive, and it’s focused solely on replication (no transformations). For broader ETL, additional tools are needed.
Read full review

What is Weld

Weld is a powerful ETL platform that seamlessly integrates ELT, data transformations, reverse ETL, and AI-assisted features into one user-friendly solution. With its intuitive interface, Weld makes it easy for anyone, regardless of technical expertise, to build and manage data workflows. Known for its premium quality connectors, all built in-house, Weld ensures the highest quality and reliability for its users. It is designed to handle large datasets with near real-time data synchronization, making it ideal for modern data teams that require robust and efficient data integration solutions. Weld also leverages AI to automate repetitive tasks, optimize workflows, and enhance data transformation capabilities, ensuring maximum efficiency and productivity. Users can combine data from a wide variety of sources, including marketing platforms, CRMs, e-commerce platforms like Shopify, APIs, databases, Excel, Google Sheets, and more, providing a single source of truth for all their data.

Pros

  • Premium quality connectors and reliability
  • User-friendly and easy to set up
  • AI assistant
  • Very competitive and easy-to-understand pricing model
  • Reverse ETL option
  • Lineage, orchestration, and workflow features
  • Advanced transformation and SQL modeling capabilities
  • Ability to handle large datasets and near real-time data sync
  • Combines data from a wide range of sources for a single source of truth

Cons

  • Requires some technical knowledge around data warehousing and SQL
  • Limited features for advanced data teams

A reviewer on G2 said:

What I like about Weld

First and foremost, Weld is incredibly user-friendly. The graphical interface is intuitive, which makes it easy to build data workflows quickly and efficiently. Even with little experience in SQL and pipeline management, we found that Weld was straightforward and easy to use. What really impressed me, however, was Weld's flexibility. It was able to handle data from a wide variety of sources, including SQL databases, Google Sheets, and even APIs. The solution also allowed us to customize my data transformations in a way that best suited my needs. Whether I needed to clean data, join tables, or aggregate data, Weld had the necessary tools to accomplish the task. Weld's performance was also exceptional. I was able to run large-scale ETL jobs quickly and efficiently, with minimal downtime via a Snowflake instance and visualization via own-hosted Metabase. The solution's scalability meant that I could process more data without any issues. Another standout feature of Weld was its support. I never felt lost or unsure about how to use a particular feature, as the support team was always quick to respond to any questions or concerns that I had. Overall, I highly recommend Weld as an ETL solution. Its user-friendliness, flexibility, performance, and support make it an excellent choice for anyone looking to streamline their data integration processes. I will definitely be using Weld for all my ETL needs going forward.

What I dislike about Weld

Weld is still limited to a certain number of integrations - although the team is super interested to hear if you need custom integrations.
Read full review

Feature-by-Feature Comparison

Ease of Use & Interface

Qlik Replicate

The Qlik Replicate UI provides wizards to create replication tasks quickly, monitors latency and throughput, and auto-detects schema changes. Setup for common CDC tasks is straightforward, but advanced filtering and tuning require expertise.

Weld

Weld is highly praised for its user-friendly interface and intuitive design, which allows even users with minimal SQL experience to manage data workflows efficiently. This makes it an excellent choice for smaller data teams or businesses without extensive technical resources.

Pricing & Affordability

Qlik Replicate

The licensing model is per-engine/core, often starting at $50k+/year for smaller environments. While expensive, the high reliability and low-latency replication justify cost for mission-critical use cases.

Weld

Weld offers a straightforward and competitive pricing model, starting at $99 for 2 million active rows, making it more affordable and predictable, especially for small to medium-sized enterprises.

Feature Set

Qlik Replicate

Features: CDC-based replication, automated schema drift handling, support for 100+ sources/targets (databases, mainframes, cloud), multi-target replication, and basic transformations (e.g., data type conversions). No deep transformation engine.

Weld

Weld integrates ELT, data transformations, and reverse ETL all within one platform. It also provides advanced features such as data lineage, orchestration, workflow management, and an AI assistant, which helps in automating repetitive tasks and optimizing workflows.

Flexibility & Customization

Qlik Replicate

Users can configure advanced mapping rules, filters, and transformations (limited) via the UI or JSON configs. For deeper transforms, integrate with Qlik Compose or third-party ETL. Qlik Replicate can be automated via CLI and REST API.

Weld

Weld offers advanced SQL modeling and transformations directly within its platform with the help of AI, providing users with unparalleled control and flexibility over their data. Leveraging its powerful AI capabilities, Weld automates repetitive tasks and optimizes data workflows, allowing teams to focus on getting value and insights. Additionally, Weld's custom connector framework enables users to build connectors to any API, making it easy to integrate new data sources and tailor data pipelines to meet specific business needs. This flexibility is particularly beneficial for teams looking to customize their data integration processes extensively and maximize the utility of their data without needing external tools.

Summary of Qlik Replicate vs Weld

WeldQlik Replicate
Connectors200+100+
Price$79 / No data volume limitsSubscription/perpetual license (custom quotes; six-figure enterprise costs)
Free tierNoNo
LocationEUKing of Prussia, PA, USA (Qlik HQ)
Extract data (ETL)YesNo
Sync data to HubSpot, Salesforce, Klaviyo, Excel etc. (reverse ETL)YesNo
TransformationsYesNo
AI AssistantYesNo
On-PremiseNoYes
OrchestrationYesYes
LineageYesNo
Version controlYesNo
Load data to and from ExcelYesNo
Load data to and from Google SheetsYesNo
Two-Way SyncYesNo
dbt Core IntegrationYesNo
dbt Cloud IntegrationYesNo
OpenAPI / Developer APIYesYes
G2 Rating4.84.7

Conclusion

When comparing Qlik Replicate and Weld, consider your primary requirements and budget:

  • Qlik Replicate excels at features: cdc-based replication, automated schema drift handling, support for 100+ sources/targets (databases, mainframes, cloud), multi-target replication, and basic transformations (e.g., data type conversions). no deep transformation engine. . If you need robust transformations and a wide connector catalogue with a strong focus on users can configure advanced mapping rules, filters, and transformations (limited) via the ui or json configs. for deeper transforms, integrate with qlik compose or third-party etl. qlik replicate can be automated via cli and rest api. , this may be your best choice.
  • Weld offers competitive pricing and weld is highly praised for its user-friendly interface and intuitive design, which allows even users with minimal sql experience to manage data workflows efficiently. this makes it an excellent choice for smaller data teams or businesses without extensive technical resources.. If you prioritize ease of setup, real-time syncing, or specific integrations, this tool could be a better fit.
Ultimately, review the detailed sections above—connectors, pricing, and features—and select the tool that aligns most closely with your data stack, technical resources, and long-term goals.

Want to try a better alternative? Try Weld for free today.