This list of Apache Software Foundation projects contains the software development projects of The Apache Software Foundation (ASF).[1]
Besides the projects, there are a few other distinct areas of Apache:
provides and manages all infrastructure and services for the Apache Software Foundation, and for each project at the Foundation
secure implementation of Bigtable
message broker supporting different communication protocols and clients, including a full Java Message Service (JMS) 1.1 client.[2]
PostgreSQL extension that provides graph database functionality in order to enable users of PostgreSQL to use graph query modeling in unison with PostgreSQL's’ existing relational model
a distributed system software framework to manage simple to composite applications with complex execution and workflow patterns on diverse computational resources
Python-based platform to programmatically author, schedule and monitor workflows
Python-based open source implementation of a software forge
Java-based build tool
The Ant Library provides Ant tasks for testing Ant task, it can also be used to drive functional and integration tests of arbitrary applications with Ant
a very powerful dependency manager oriented toward Java dependency management, even though it could be used to manage dependencies of any kind
integrate Ivy in Eclipse with the IvyDE plugin
cloud-native microservices API gateway
Build Artifact Repository Manager
OSGi Enterprise Programming Model
"A high-performance cross-system data layer for columnar in-memory analytics".[3] [4]
open source Big Data Management System
scalable and extensible set of core foundational governance services
a data serialization system.
open source, XML based Web service framework
a service hosting and consumption framework that makes it easy to use SOAP and Web Services
implementation of the WS-Security standard for the Axis2 Web services engine
an Axis2 module implementing WS-RM.
extensions to distributed analytic platforms such as Apache Spark
a project for the development of packaging and tests of the Apache Hadoop ecosystem.
defect tracker based on Trac[5]
a reliable replicated log service
a framework for modelling, monitoring, and managing applications through autonomic blueprints
industrial-grade RPC framework for building reliable and high-performance services
tool for building/integrating software stacks
Bean Validation API Implementation
dynamic data management framework
declarative routing and mediation rules engine which implements the Enterprise Integration Patterns using a Java-based domain specific language
an indexed columnar data format for fast analytics on big data platform, e.g., Apache Hadoop, Apache Spark, etc
highly scalable second-generation distributed database
Java ORM framework
implementation of the OSGi specification adapted to C and C++
software to deploy and manage cloud infrastructure
XML publishing framework
reusable Java libraries and utilities too small to merit their own project
Bytecode Engineering Library
Commons Daemon
Jelly is a Java and XML based scripting engine. Jelly combines the best ideas from JSTL, Velocity, DVSL, Ant and Cocoon all together in a simple yet powerful scripting engine
Commons Logging is a thin adapter allowing configurable bridging to other, well known logging systems
Object Graph Navigation Library
project that creates and provides tools, processes, and advice to help open-source software projects improve their own community health
mobile development framework
improves accuracy and efficiency when reviewing and auditing releases.
simplifies the job of reviewing repository releases consisting of large numbers of artefacts
assists assembled applications to maintain correct legal documentation.
clinical "Text Analysis Knowledge Extraction Software" to extract information from electronic medical record clinical free-text
builds on ZooKeeper and handles the complexity of managing connections to the ZooKeeper cluster and retrying operations
web services framework
implementation of the Data Format Description Language (DFDL) used to convert between fixed format data and XML/JSON
collection of libraries for working with large-scale data in Hadoop
open source, high-performance library of stochastic streaming algorithms commonly called "sketches" in the data sciences
pure Java relational database management system
Java Data Objects, persistence for Java objects
ORM for Java
collection of JSR-299 (CDI) Extensions for building applications on the Java SE and EE platforms
LDAP and Kerberos, entirely in Java.
an extensible, embeddable LDAP and Kerberos server, entirely in Java
Eclipse based LDAP browser and directory client
a standards-based authorization platform that implements ANSI INCITS 359 Role-Based Access Control (RBAC)
Kerberos binding in Java
an SDK for directory access in Java
a distributed ETL scheduling engine with powerful DAG visualization interface
MPP-based interactive SQL data warehousing for reporting and analysis, good for both high-throughput scenarios and high-concurrency point queries
software framework that supports data-intensive distributed applications for interactive analysis of large-scale datasets
high-performance, column-oriented, distributed data store
high-performance, lightweight, Java-based RPC framework
charting and data visualization library written in JavaScript
a lightweight relational database abstraction layer and data persistence component
dynamic cloud-native basic service runtime used to decouple the application and middleware layer
implementation of the OSGi Release 5 core framework specification
Platform for Digital Financial Services
software tool usability testing platform
cross-platform SDK for developing and deploying rich Internet applications.
fast and reliable large-scale data processing engine.
large scale log aggregation framework
a distributed processing system that lets users make incremental updates to large data sets
Apache Fluo Recipes build on the Fluo API to offer additional functionality to developers
a tool for running Apache Fluo applications in Apache Hadoop YARN
a template engine, i.e. a generic tool to generate text output based on templates. FreeMarker is implemented in Java as a class library for programmers
low latency, high concurrency data management solutions
Java EE server
distributed data integration framework
an open source framework that provide an in-memory data model and persistence for big data
an open source Data Quality solution for Big Data, which supports both batch and streaming mode. Originally developed by eBay[6]
an object-oriented, dynamic programming language for the Java platform
HTML5 web application for accessing remote desktops [7]
integration, dependencies, and versioning management
Java software framework that supports data intensive distributed applications
advanced enterprise SQL on Hadoop analytic engine
Apache HBase software is the Hadoop database. Think of it as a distributed, scalable, big data store
a cluster management framework for partitioned and replicated distributed resources
the Apache Hive data warehouse software facilitates querying and managing large datasets residing in distributed storage.
The Hop Orchestration Platform, or Apache Hop, aims to facilitate all aspects of data and metadata orchestration.
The Apache HTTP Server application 'httpd'
module that integrates the Python interpreter into Apache server. Deprecated in favour of mod_wsgi.
low-level Java libraries for HTTP
provides atomic upserts and incremental data streams on Big Data
an open standard for analytic SQL tables, designed for high performance and ease of use.
an In-Memory Data Fabric providing in-memory data caching, partitioning, processing, and querying components[8]
a high-performance distributed SQL engine
a one-stop integration framework for massive data that provides automatic, secure and reliable data transmission capabilities
data store for managing large amounts of time series data in industrial applications
implementation of the Java Content Repository API
open source multi-cloud toolkit for the Java platform
pure Java application for load and functional testing
JSR-353 compliant JSON parsing; modules to help with JSR-353 as well as JSR-374 and JSR-367
A feature-rich and extensible WikiWiki engine built around the standard J2EE components (Java, servlets, JSP)
A toolkit for marshalling POJOs to a wide variety of content types using a common framework
a message broker software
an OSGi distribution for server-side applications.
a suite of tools for collecting, aggregating and visualizing activity in software projects.
a REST API Gateway for Hadoop Services
a distributed columnar storage engine built for the Apache Hadoop ecosystem
a distributed key-value NoSQL database, supporting the rich data structure
distributed analytics engine
a distributed multi-tenant Thrift JDBC/ODBC server for large-scale data management, processing, and analytics, built on top of Apache Spark and designed to support more engines
a standard Python library that abstracts away differences among multiple cloud provider APIs.
a computation middleware project, which decouples the upper applications and the underlying data engines, provides standardized interfaces (REST, JDBC, WebSocket etc.) to easily connect to various underlying engines (Spark, Presto, Flink, etc.)
provides logging services for C++.
Apache Log4j
provides logging services for .NET.
a logging framework for PHP.
a high-performance, full-featured text search engine library
enterprise search server based on the Lucene Java search library
a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
Scalable, Big Data, SQL-driven machine learning framework for Data Scientists
machine learning and data mining solution. Mahout
Open-source software for transferring content between repositories or search indexes
Java project management and comprehension tool
a content generation framework, which supports many markup languages.
open-source cluster manager
FTP server written entirely in Java
Multipurpose Infrastructure for Network Application, a framework to develop high performance and high scalability network applications. MINA
a 100% pure Java library to support the SSH protocols on both the client and server side SSHD
aims to be a modular, full featured XMPP (Jabber) server. Vysper is implemented in Java
a transparent nonvolatile hybrid memory oriented library for Big data, High-performance computing, and Analytics
JavaServer Faces implementation
set of user interface components based on JSF
embedded OS optimized for networking and built for remote management of constrained devices
development environment, tooling platform, and application framework
easy to use, powerful, and reliable system to process and distribute data
a highly extensible and scalable open source web crawler
mature, real-time embedded operating system (RTOS)
Open for Business: enterprise automation software
Client and Server for OData
a workflow scheduler system to manage Apache Hadoop jobs.
Java Persistence API Implementation
video conferencing, instant messaging, white board and collaborative document editing application
natural language processing toolkit
an open-source, office-document productivity suite
Dependency Injection Platform
distributed Serverless computing platform
columnar file format for big data workloads
scalable, redundant, and distributed object store for Hadoop
a general-purpose columnar storage format
Java based PDF library (reading, text extraction, manipulation, viewer)
module that integrates the Perl interpreter into Apache server
toolkit and an ecosystem for building highly concurrent, distributed, reactive and resilient applications for Java and Scala[9]
deals with the assessment of, education in, and adoption of the Foundation's policies and procedures for collaborative development and the pros and cons of joining the Foundation
a platform for analyzing large data sets on Hadoop
a column-oriented, open-source, distributed data store written in Java[10]
a platform for building rich internet applications in Java
Universal API for communicating with programmable logic controllers
Poor Obfuscation Implementation, a library for reading and writing Microsoft Office formats
XML–Java binding tool
Apache Portable Runtime, a portability library written in C
web portal related software
distributed pub-sub messaging system originally created at Yahoo
AMQP messaging system in Java and C++
a framework to enable, monitor and manage comprehensive data security across the Hadoop platform
Java implementation for RAFT consensus protocol
a fast, low latency, reliable, scalable, distributed, easy to use message-oriented middleware, especially for processing large amounts of streaming data
a full-featured, multi-user and group blog server suitable for both small and large blog sites
improving developer productivity in creating applications for wherever JavaScript runs (and other runtimes)
cloud-based RDF triple store that supports SPARQL queries
Stream Processing Framework
XML Security in Java and C++
integrated data analytic center for Big Science problems
a very easy-to-use ultra-high-performance distributed data integration platform that supports real-time synchronization of massive data
big geospatial data processing engine
high performance C-based HTTP client library built upon the Apache Portable Runtime (APR) library
microservice framework that provides a set of tools and components to make development and deployment of cloud applications easier
related to a database clustering system providing data sharding, distributed transactions, and distributed database management
Java native API Gateway for service proxy, protocol conversion and API governance
a simple to use Java Security Framework
a distributed deep learning library
A library for developing geospatial applications
application performance management and monitoring (APM)
innovative Web framework based on JCR and OSGi
Full Text search server
email filter used to identify spam
open source cluster computing framework
STeVe is a collection of online voting tools, used by the ASF, to handle STV and other voting methods
a distributed real-time computation system.
self-service (Industrial) IoT toolbox to enable non-technical users to connect, analyze and explore (Industrial) IoT data streams
Interoperability of online profiles and activity feeds
Java web applications framework
Cloud Native Machine Learning Platform
open source version control (client/server) system
enterprise-ready web application for data exploration, data visualization and dashboarding
a lightweight and high-performance Enterprise Service Bus (ESB)
an Open Source system for managing digital identities in enterprise environments.
scalable machine learning
component-based Java web framework
Server-side Tcl programming system combining ease of use and power
Websh is a rapid development environment for building powerful, fast, and reliable web applications in Tcl
an effort to develop a generic application framework which can be used to process arbitrarily complex directed-acyclic graphs (DAGs) of data-processing tasks and also a re-usable set of data-processing primitives which can be used by other projects
content analysis toolkit for extracting metadata and text from digital documents of various types, e.g., audio, video, image, office suite, web, mail, and binary
A graph computing framework for both graph databases (OLTP) and graph analytic systems (OLAP)
web container for serving servlets and JSP
A framework for creating JSP taglibs that aid in rapid development of voice and multimodal applications
an all-Apache Java EE 6 Web Profile stack for Apache Tomcat
Built around Apache Traffic Server as the caching software, Traffic Control implements all the core functions of a modern CDN. Traffic Control
HTTP/1.1 compliant caching proxy server. Traffic Server
a servlet based framework that allows Java developers to quickly build web applications
an end to end machine learning compiler framework for CPUs, GPUs and accelerators
unstructured content analytics framework
reference implementation of the OASIS customer data platform specification
a cloud computing platform for provisioning and brokering access to dedicated remote compute resources.
an XML transformation tool which uses JDOM and Velocity to transform XML documents into multiple formats.
a general purpose text generating utility based on Apache Velocity and Apache Ant.
Java template creation engine
a tool modeled after XSLT and intended for general XML transformations using the Velocity Template Language.
tools and infrastructure for the template engine
an XML object model supporting deferred parsing.
used to develop a Java class library for reading, manipulating, creating and writing WSDL documents.
tools that display and visualize various bits of data related to ASF organizations and processes.
component-based Java web framework
XSLT processors in Java and C++
validating XML parser
pure Java library for SVG content manipulation
Java print formatter driven by XSL formatting objects (XSL-FO); supported output formats include PDF, PS, PCL, AFP, XML (area tree representation), Print, AWT and PNG, and to a lesser extent, RTF and TXT
common components for Apache Batik and Apache FOP
standalone resource scheduler responsible for scheduling batch jobs and long-running services on large scale distributed systems
a collaborative data analytics and visualization tool for distributed, general-purpose data processing systems
coordination service for distributed applications
provides annotation enabling code for browsers, servers, and humans
toolkit and a set of infrastructure components for creating, publishing and operating online maps
intermediate data service for big data computing engines to boost performance, stability and flexibility
platform for creating self-service, exploratory data science environments in the cloud using best-of-breed data science tools
development data platform, providing the data infrastructure for developer teams to analyze and improve their engineering productivity
a large-scale and easy-to-use graph database
community of solutions and supporting tooling for knowledge engineering and process automation, focusing on events, rules and workflows
an end-to-end platform for data engineers and scientists, allowing them to build, train and deploy machine learning models in a robust and agile way
web service that exposes a REST interface for managing long-running Spark contexts
core security infrastructure for decentralized networks
data processing system
Java API for NLU applications
Open Data Access Layer. Offers native layer support, enabling users to implement middleware or intercept for all operations
unified lake storage to build dynamic tables for both stream and batch processing with big data compute engines, supporting high-speed data ingestion and real-time data query
distributed key-value storage system which is designed to be simple, horizontally scalable, strongly consistent and high-performance
mail-archiving, archive viewing, and interaction service
a streaming application development platform
universal secure computing platform
provides applications with a mechanism to interactively and remotely access Spark
project aims to develop resources which can be used for training purposes in various media formats, languages and for various Apache and non-Apache target projects
set of libraries and other tools to aid development of blockchain and other decentralized software in Java and other JVM languages
an unified Remote Shuffle Service
cross-platform data processing system
The above may be incomplete, as the list of incubating project changes frequently.
A retired project is one which has been closed down on the initiative of the board, the project its PMC, the PPMC or the IPMC for various reasons. It is no longer developed at the Apache Software Foundation and does not have any other duties.
implementation of the Atom Syndication Format and Atom Publishing Protocol
a distribution framework that allows central management and distribution of software components, configuration data and other artefacts to target systems
Anything To Triples (Any23) is a library, a web service and a command line tool that extracts structured data in RDF format from a variety of Web documents
Enterprise-grade unified stream and batch processing engine
Mesos framework for long-running services and cron jobs
XML Application Server for Apache. It provided on-the-fly conversion from XML to any format, such as HTML, WAP or text using either W3C standard techniques, or flexible custom code
Java visual object model
provides open source implementations of the Content Management Interoperability Services (CMIS) specification
Chukwa is an open source data collection system for monitoring large distributed systems
a service platform which provides a set of functionality for management of semantically linked data accessible through RESTful Web Services and in a secured way
simple and easy-to-use Java Web Framework
continuous integration server
Java XML parser which supports XML 1.0 via various APIs
Provides a framework for writing, testing, and running MapReduce pipelines
provides common front-end APIs to abstract differences between cloud providers
device Data Repository and classification API
off-heap cache for the Java Virtual Machine
large scale code license analysis, auditing and reporting
open source analytics solution for identifying security and performance issues instantly on big data platforms
API for generating elements for various markup languages
secure and highly scalable microsharing and micromessaging platform that allows people to discover and meet one another and get controlled access to other sources of information, all in a business process context
cross-platform, language- and transport-independent RPC-like messaging framework
Java inversion of control framework including containers and components
data governance engine
documentation framework based upon Cocoon
scalable Graph Processing System
Hama is an efficient and scalable general-purpose BSP computing engine
Java SE 5 and 6 runtime and development kit
services and configuration microkernel
Persistence framework which enables mapping SQL queries to POJOs
server side Java, including its own set of subprojects
simple test framework for unit testing server-side Java code
statistical machine translation toolkit
Apache Scout is an implementation of the JSR 93 (JAXR).
a place for innovation where committees of the foundation can experiment with new ideas
Unified Analytics Interface
search engine library that provides full-text search for dynamic programming languages
An Open Platform for Linked Data
provides a common interface for discovery, exploration of metadata and querying of different types of data sources.
Real-time big data security
Java library that helps developers unit test Apache Hadoop map reduce jobs
Deep learning programming framework
Apache ODE is a WS-BPEL implementation that supports web services orchestration using flexible process definitions.
Object/Relational mapping tool that allowed transparent persistence for Java Objects against relational databases
OAuth protocol implementation in Java
project focused on the development and maintenance of a set of Google Guice extensions not provided out of the box by the library itself
Object Oriented Data Technology, a data management framework for capturing and sharing data
A comprehensive suite of algorithms, libraries, and interfaces designed to standardize and streamline the process of interacting with large quantities of observational data and conducting regional climate model evaluations
Regular Expression engine supporting various dialects
community based effort exploring Composite Oriented Programming for domain centric application development
PredictionIO is an open source Machine Learning Server built on top of state-of-the-art open source stack, that enables developers to manage and deploy production-ready predictive services for various kinds of machine learning tasks.
A scale-out computing fabric that eases the development of Big Data applications on top of resource managers such as Apache YARN and Mesos
Regular Expression engine
provides a standards-compliant JINI service
Fine grained authorization to data and metadata in Apache Hadoop
web application framework based on JavaServer Faces
OpenSocial container; helps start hosting OpenSocial apps quickly by providing the code to render gadgets, proxy requests, and handle REST and RPC requests
a tool designed for efficiently transferring bulk data between Apache Hadoop and structured datastores such as relational databases
collection of algorithms, containers, iterators, and other fundamental components of every piece of software, implemented as C++ classes, templates, and functions essential for writing C++ programs
Software components for semantic content management
Platform-as-a-Service (PaaS) framework
relational data warehousing system. It using the hadoop file system as distributed storage.
templating framework built to simplify the development of web application user interfaces.
SCA implementation, also providing other SOA implementations
Use Apache Hadoop YARN's distributed capabilities with a programming model that is similar to running threads
an open-source Backend-as-a-Service ("BaaS" or "mBaaS") composed of an integrated distributed NoSQL database, application layer and client tier with SDKs for developers looking to rapidly build web and/or mobile applications
online real-time collaborative editing
set of libraries for running cloud services
RESTFul web services based on JAX-RS specification
parser, server and plugins for working with W3C Packaged Web Apps
implementation of the WS-ResourceFramework (WSRF), WS-BaseNotification (WSN), and WS-DistributedManagement (WSDM) specifications
XML Web Framework that aggregated multiple data sources, made that data URL addressable and defined custom methods to access that data
XML Database
distributed tracing system
ollection of Java libraries, frameworks and tools around the CMIS specification for document interoperability.
The above may be incomplete, as the list of retired projects changes.