7 Best Open Source Big Data Projects to Level Up Your Skills
Last Updated :
15 Jul, 2025
Big data is the next big thing in the tech industry. When harnessed to its full power, it can change business practices for the better. Open-source projects using big data are a big contributing factor in that. Many companies already use open-source software because it is customizable and technically superior. Also, companies don’t have to rely on a particular vendor when they use it. There are now hundreds of open-source projects in Big data, but we will discuss the most popular and interesting projects in this article.

These open-source projects have a high potential to change business practices and allow companies the flexibility and agility to handle changes in customer needs, business trends, and market challenges. So let’s check out these projects as they may have a big impact on the IT infrastructure and overall business practices in the future.
What is Big Data?
Big Data refers to extremely large sets of data that are so complex and voluminous that traditional data-processing software is not enough to manage, analyze, or store them effectively. With the growth of the internet, social media, smart devices, and the increasing number of transactions happening every day, the volume of data being generated has skyrocketed. Big Data is all about collecting, storing, processing, and analyzing this massive amount of data to uncover patterns, trends, and insights that can help make better decisions, improve services, and drive business growth.
The three key characteristics that define Big Data are often referred to as the Three Vs:
- Volume: This refers to the sheer amount of data that is being generated. It could be in the form of customer transactions, social media posts, sensor data from devices, and more. The volume of data is growing rapidly, and it’s much more than traditional data-processing systems can handle.
- Velocity: This is the speed at which data is being generated and needs to be processed. For example, social media platforms generate millions of posts every minute. This data must be processed in real-time to gain valuable insights, like understanding public sentiment or tracking trends.
- Variety: Big Data comes in many different forms. It can be structured data, like numbers in databases; unstructured data, like social media posts or emails; or semi-structured data, like logs or XML files. Managing and analyzing all these different types of data is one of the main challenges of Big Data.
Best Open Source Big Data Projects
1. Apache Beam
Apache Beam is an open-source model for both batch and streaming the parallel processing pipelines for the data. It’s even called Beam because of its a combination of Batch and Stream! You can also build a program that defines the pipeline using any of the open-source Beam SDKs which are available in Java, Python and Go languages. There is also a Scala interface known as Scio. The pipeline can then be executed by one of the distributed processing back-ends that are supported by Beam. These include Apache Flink, Apache Spark, Apache Samza, Hazelcast Jet, and Google Cloud Dataflow. You can also execute your pipeline locally for testing and debugging purposes if you wish. Apache Beam is also useful for Extract, Transform, and Load (ETL) tasks and pure data integration as well. These allow data to move between data storage and transform into the required format or even load it onto a new system.
2. Apache Airflow
Apache Airflow is a platform to automatically author, schedule, and monitor the Beam data pipelines using programming. Since these pipelines are configured using programming, they are dynamic and it is possible to use Airflow to author workflows as visualized graphics or directed acyclic graphs (DAGs) of tasks. Airflow also has a rich user interface that makes it simple to visualize the pipelines running in production, troubleshoot any problems if they occur, and even monitor the progress of the pipelines. Another advantage of Airflow is that it is extensible, which means you can define your operators, and also extend the library to the level of abstraction that is appropriate for your environment. Airflow is also very scalable with its official website even claiming that it can scale to infinity!
3. Apache Spark
Apache Spark is an open-source cluster-computing framework that can provide programming interfaces for entire clusters. This contributes to insanely fast big data processing with capabilities for SQL, machine learning, real-time data streaming, graph processing, etc. Spark Core is the foundation of Apache Spark which is centered on RDD abstraction. Spark SQL uses DataFrames to provide support for structured and semi-structured data. Apache Spark is also highly adaptable and it can be run on a standalone cluster mode or Hadoop YARN, EC2, Mesos, Kubernetes, etc. You can also access data from various sources like the Hadoop Distributed File System, or non-relational databases like Apache Cassandra, Apache HBase, Apache Hive, etc. Apache Spark also allows for the analysis of historical data with live data to make real-time decisions, which makes it excellent for applications such as predictive analytics, fraud detection, sentiment analysis, etc.
4. Apache Zeppelin
Apache Zeppelin is a multi-purpose notebook that is useful for Data Ingestion, Data Discovery, Data Analytics, Data Visualization, and Data Collaboration. It was initially developed for providing the front-end web infrastructure for Apache Spark and so it can seamlessly interact with Spark apps without using any separate modules or plugins. The Zeppelin Interpreter is a fantastic part of this as you can use to plugin any data-processing-backend to Zeppelin. The Zeppelin interpreter supports Spark, Markdown, Python, Shell. and JDBC. There are also many data visualizations already included in Apache Zeppelin. These visualizations can be created using output from any language backend and not just the SparkSQL query.
5. Apache Cassandra
Apache Cassandra is a scalable and high-performance database that is provably fault-tolerant both on commodity hardware or cloud infrastructure. It can even handle failed node replacements without shutting down the systems and it can also replicate data automatically across multiple nodes. Moreover, Cassandra is a NoSQL database in which all the nods are peers without any master-slave architecture. This makes it extremely scalable and fault-tolerant and you can add new machines without any interruptions to already running applications. You can also choose between synchronous and asynchronous replication for each update. Cassandra is very popular and is used by top companies like Apple, Netflix, Instagram, Spotify, Uber, etc.
6. TensorFlow
TensorFlow is a free end-to-end open-source platform that has a wide variety of tools, libraries, and resources for Machine Learning. It was developed by the Google Brain team. You can easily build and train Machine Learning models with high-level API’s such as Keras using TensorFlow. It also provides multiple levels of abstraction so you can choose the option you need for your model. TensorFlow also allows you to deploy Machine Learning models anywhere such as the cloud, browser, or device. You should use TensorFlow Extended (TFX) if you want the full experience, TensorFlow Lite if you want usage on mobile devices, and TensorFlow.js if you want to train and deploy models in JavaScript environments. TensorFlow is available for Python and C APIs and also for C++, Java, JavaScript, Golang, Swift, etc. but without an API backward compatibility guarantee. Third-party packages are also available for MATLAB, C#, Julia, Scala, R, Rust, etc.
7. Kubernetes
Kubernetes is an open-source system for automatic deploying, scaling, and management of different container applications. It groups all the containers that make up an application into logical units so that they can be easily managed and discovered. Kubernetes was created on the same technology that Google uses to run billions of containers a week, and so it is highly efficient and seamless. It arranges the containers concerning their dependencies automatically so that the pivotal and best-effort workloads are mixed correctly to maximize the utilization of data resources. Kubernetes can also leverage hybrid or public cloud infrastructures to source data and move workloads seamlessly. And in addition to all this, Kubernetes is self-healing, which means it can detect and kill the nodes that have become unresponsive and it can also replace and reschedule containers when a node fails.
Conclusion
All of these open source projects together contribute to making huge advances in big data. And though their impacts on the open-source community are impressive, the truly great thing is that they are collectively shifting the industry from proprietary software to open-source software. This means that all companies, big and small, can make use of this software to improve their day to day working with big data analytics. And the whole industry can make big strides in the fields of big data and data analytics as a whole.
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