CollateX is a free Java library for collating texts offered by Interedition, designed to be the successor to Peter Robinson's Collate. It uses a component-oriented architecture, to enable users to mix and match components according to their needs. Though its core library is Java, it also integrates a demo web application, a demo client application and Python language bindings that allow CollateX to be embedded into Python applications.

CollateX-based text collation client. CollateX, run on an server independent from the URL above, is a powerful, fully automatic, baseless text collation engine for multiple witnesses. A second collation technique, ncritic, provides a slightly different baseless text collation. Each engine complements each other nicely. The user can use different files, even URLs, then output the result in GraphML, TEI, JSON, HTML, or SVG. Fuzzy matching is an option.