owl2vcs is a set of tools designed to facilitate version control of OWL 2 ontologies using version control systems. It contains a commandline diff tool for OWL 2 ontologies integrated with Git and Mercurial. It detects axioms additions and removals, imports' additions and removals, ontology annotations' additions and removals, prefix additions, removals, modifications, and renames, ontology IRI and version IRI changes, and ontology format changes. It supports RDF/XML, OWL/XML, OWL Functional Syntax, Manchester OWL Syntax, and Turtle. It provides a changeset serializer and parser, two formats of changes, compact (like OWL Functional Syntax) and indented (the same, but more readable, using indents instead of parentheses), and four formats of IRIs: Simple, QName, Full, and Label.
DiffKit is an application and a framework, for comparing two tables of data, field-by-field. The tables can come from any of a number of sources, such as an RDBMS or CSV file, and DiffKit is able to mix different kinds of sources in the same diff operation. It is like the Unix diff utility, but for tables instead of lines of text. Diffs can be reported at both the row and field level, and the user can configure what to compare, how to compare it, what to ignore). DiffKit is highly customizable with respect to the sources of tabular data, the details of the comparison, and the characteristics of the output (diff report).
Replo is a cross-platform utility for performing syntactically-aware diff, find, and replace operations. It is similar to IntelliJ's "structural find and replace" feature but allows for configurable grammars. With Replo, users can compare, detect, and replace idiomatic structures without worrying about irrelevant stylistic inconsistencies. Common grammars (e.g. C, C++, C#, Java, Ruby) are provided, but users can also leverage ANTLR to define their own.
Oxygen XML Diff is a complete solution for comparing and merging XML files. It offers both directory and file comparison, six different diff algorithms, and multiple levels of comparison. The comparison can also be performed inside ZIP-based archives (ZIP, JAR, ODF, OOXML). Oxygen XML Diff includes two specialized XML-aware comparison algorithms: XML Accurate, tuned for precise comparison, and XML Fast, tuned for speed at the expense of some accuracy.
JDiff is a tool which performs folder recursive comparisons and file comparison based on Myer's minimum set of differences algorithm. Based on this file comparison algorithm, it also provides a 3-way merge, which can run without a graphical interface. JDiff is released as an auto-executable jar file.