The OpenWebsuite.org contains the powerful HTML-Editor (X)HTML-Format and the Site analysing tool WebAnalyse. It includes a project management, css editor, link-check (for whole domains) and much more. It was released under the GNU GPL to find helper.
Sperowider Website Archiving Suite is a set of Java applications, the primary purpose of which is to spider dynamic websites, and to create static distributable archives with a full text search index usable by an associated Java applet.