The ASF is made up of more than 150 top level projects which cover a wide range of technologies. Chances are if you are looking for a rewarding experience in Open Source, you are going to find it here.
Framework that provides scripting language support within Java applications
Bean Scripting Framework (BSF) is a set of Java classes which provides scripting language support within Java applications, and access to Java objects and methods from scripting languages. BSF allows one to write JSPs in languages other than Java while providing access to the Java class library. In addition, BSF permits any Java application to be implemented in part (or dynamically extended) by a language that is embedded within it. This is achieved by providing an API that permits calling scripting language engines from within Java, as well as an object registry that exposes Java objects to these scripting language...
Apache OpenNLP library software is a machine learning based toolkit for the processing of natural language text..
Apache OpenNLP software supports the most common NLP tasks, such as tokenization, sentence segmentation, part-of-speech tagging, named entity extraction, chunking, parsing, and coreference resolution. These tasks are usually required to build more advanced text processing services. OpenNLP also includes maximum entropy and perceptron based machine learning..
Tajo is an open source big data warehouse system in Hadoop for processing web-scale data sets.
The main goal of Apache Tajo project is to build an advanced open source data warehouse system in Hadoop for processing web-scale data sets. Basically, Tajo provides SQL standard as a query language. Tajo is designed for both interactive and batch queries on data sets stored on HDFS and other data sources. Without hurting query response times, Tajo provides fault-tolerance and dynamic load balancing which are necessary for long-running queries. Tajo employs a cost-based and progressive query optimization techniques for reoptimizing running queries in order to avoid the worst query plans.