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.

Juxta is an open-source cross-platform tool for comparing and collating multiple witnesses to a single textual work. The software allows users to set any of the witnesses as the base text, to add or remove witness texts, to switch the base text at will, and to annotate Juxta-revealed comparisons and save the results.

Philologic is a full-text search, retrieval and analysis tool with support for TEI-Lite XML/SGML, Unicode encoding, plaintext, Dublin Core/HTML, and DocBook.

TXM is a free and open-source cross-platform Unicode, XML & TEI based text/corpus analysis environment and graphical client, supporting Windows, Linux and Mac OS X. It can also be used online as a J2EE standard compliant web portal (GWT based) with access control built in.

"The Versioning Machine is a framework and an interface for displaying multiple versions of text encoded according to the Text Encoding Initiative (TEI) Guidelines... While the VM provides for features typically found in critical editions, such as annotation and introductory material, it also takes advantage of the opportunities afforded by electronic publication to allow for the comparison diplomatic versions of witnesses, and the ability to easily compare an image of the manuscript with a diplomatic version"