Main.MerijnDeJonge, Main.EelcoVisser and Main.JoostVisser. *XT: a bundle of program transformation tools.* In Tools.MarkVanDenBrand and Transform.DidierPerigot, editors, _Workshop on Language Descriptions, Tools and Applications (LDTA'01)_, volume 44 of _Electronic Notes in Theoretical Computer Science_. Elsevier Science Publishers, April 2001. *Abstract* XT bundles existing and newly developed program transformation libraries and tools into an open framework that supports component-based development of program transformations. We discuss the roles of XT's constituents in the development process of program transformation tools, as well as some experiences with building program transformation systems with XT. *Links* * Paper: http://www.cs.uu.nl/~visser/ftp/JVV01.ps.gz * Download: Tools.XtDownload ------ Transform.CategoryPaper