CloverETL - Rapid Data Integration

•    Java

Java based data integration framework can be used to transform/map/manipulate data in various formats (CSV,FIXLEN,XML,XBASE,COBOL,LOTUS, etc.); can be used standalone or embedded(as a library). Connects to RDBMS/JMS/SOAP/LDAP/S3/HTTP/FTP/ZIP/TAR.

BIRT

•    Java

BIRT is an Eclipse-based open source reporting system for web applications, especially those based on Java and J2EE. BIRT has two main components: a report designer based on Eclipse, and a runtime component that you can add to your app server. BIRT also offers a charting engine that lets you add charts to your own application.

kiba - Data processing & ETL framework for Ruby

•    Ruby

If you need help, please ask your question with tag kiba-etl on StackOverflow so that other can benefit from your contribution! I monitor this specific tag and will reply to you. Writing reliable, concise, well-tested & maintainable data-processing code is tricky.

data-integration - A lightweight opinionated ETL framework, halfway between plain scripts and Apache Airflow

•    Python

Data integration pipelines as code: pipelines, tasks and commands are created using declarative Python code. PostgreSQL as a data processing engine.

SpagoBI - Business Intelligence Suite

•    Java

SpagoBI is the only entirely open source Business Intelligence suite. It covers all the analytical areas of Business Intelligence projects, with innovative themes and engines. SpagoBI offers a wide range of entirely open source analytical tools like Reporting, OLAP, Chart, Data mining, Real-time monitoring console, ETL.

Pentaho

•    Java

Pentaho is the open source business intelligence leader. Thousands of organizations globally depend on Pentaho to make faster and better business decisions that positively impact their bottom lines. Download the Pentaho BI Suite today if you want to speed your BI development, deploy on-premise or in the cloud or cut BI licensing costs by up to 90%.

Transporter - Sync data between persistence engines, like ETL only not stodgy

•    Go

Compose Transporter helps with database transformations from one store to another. It can also sync from one to another or several stores.Transporter allows the user to configure a number of data adaptors as sources or sinks. These can be databases, files or other resources. Data is read from the sources, converted into a message format, and then send down to the sink where the message is converted into a writable format for its destination. The user can also create data transformations in JavaScript which can sit between the source and sink and manipulate or filter the message flow.

Kylin - Extreme OLAP Engine for Big Data

•    Java

Apache Kylin is an open source Distributed Analytics Engine designed to provide SQL interface and multi-dimensional analysis (OLAP) on Hadoop supporting extremely large datasets, original contributed from eBay Inc. It is designed to reduce query latency on Hadoop for 10+ billions of rows of data. It offers ANSI SQL on Hadoop and supports most ANSI SQL query functions.

Apache Tajo - A big data warehouse system on Hadoop

•    Java

Apache Tajo is a robust big data relational and distributed data warehouse system for Apache Hadoop. Tajo is designed for low-latency and scalable ad-hoc queries, online aggregation, and ETL (extract-transform-load process) on large-data sets stored on HDFS (Hadoop Distributed File System) and other data sources.

Scriptella - ETL (Extract-Transform-Load) and Script Execution Tool

Scriptella is an ETL (Extract-Transform-Load) and script execution tool. Its primary focus is simplicity. It doesn't require the user to learn another complex XML-based language to use it, but allows the use of SQL or another scripting language suitable for the data source to perform required transformations.

koop - :crystal_ball: Transform, query, and download geospatial data on the web.

•    Shell

Koop is a highly-extensible Javascript toolkit for connecting incompatible spatial APIs. Out of the box it exposes a Node.js server that can translate GeoJSON into the Geoservices specification supported by the ArcGIS family of products. Koop can be extended to translate data from any source to any API specification. Don't let API incompatiblity get in your way, start using one of Koop's data providers or write your own. Visit the demo at http://koop.dc.esri.com.

LSC engine - LDAP Synchronization Connector

•    Java

Ldap Synchronization Connector reads from any data source including databases, LDAP directories or files and transforms and compares this data to an LDAP directory. These connectors can then be used to continuously synchronize a data source to a directory, for a one shot import or just to compare differences by outputting CSV or LDIF format reports.

SQL Parallel Boost

Compared to the single-thread approach of SQL Server itself, SQL Parallel Boost facilitates the parallel execution of any data modification operations (UPDATE, INSERT, DELETE) - making best use of all available CPU resources. This results in performance gains of up to factor...

SvcPerf - E2E ETW trace analysis tool

End-to-End ETW trace viewer for manifest based traces.

SSIS Dimension Merge SCD Component

A custom Data Flow component for SQL Server Integration Services (SSIS) that replaces the standard SCD Wizard with a superior experience, from the configuration UI to runtime performance. Performs 100x faster than the standard component, and edits are non-destructive.

GDAL SSIS

GDAL SSIS is a collection of geospatial components for SQL Server Integration Services (SSIS) that leverages GDAL to support a large number of GIS data formats.

Static Analyzer For Integration Services Packages

The parser check Best practice guidelines in Business Intelligence projects. Packages can be studied which are created with Visual Studio 2010.

XPerfUI

•    CSharp

GUI wrapper for the XPerf performance analysis command-line tool.

Microsoft SQL Server Metadata-Driven ETL Management Studio (MDDE)

Originally an internal MSIT solution that has been released as an open source project, the Microsoft SQL Server Metadata-Driven ETL Management Studio (a.k.a. MDDE) provides a tool for rapidly generating SQL Server Integration Services (SSIS) packages from a shared central metadat

FluentETL - Data automation made easy for coders

•    LINQ

Automate data transfers with a few lines of code. Replace SSIS with concise yet powerful .NET code. Much simpler and easier to learn than Rhino ETL, yet flexible enough to use just about any data source.