From ISOGG Wiki
DNAGedcom is a site created by Rob Warthen to help users quickly analyze their data. They provide a Client application that allows you to download data from 23andMe, Ancestry, FTDNA and My Heritage. In addition, the web site has the ability to compare many Gedcoms at one time through the GWorks utility. Finally, the JWorks and KWorks tools allow you to quickly group your data together in a visually appealing manner.
The DNAGedcom Client is the tool used to download your information. That tool runs on your Mac or Windows machine and downloads the information directly to your computer.
Recently, a new grouping feature has been added to allow you to review your matches in common with and visually see how they relate to each other using a method pioneered by Dana Leeds.
- DNAGedcom also hosts Don Worth's Autosomal DNA Segment Analyser, a visual tool for triangulating and comparing segments chromosome by chromosome without the need for a spreadsheet.
- For detailed instructions see Autosomal DNA Segment Analyzer (ADSA): No Spreadsheets Required! by Sue Griffith on the Genealogy Junkie website.
- Introducing the autosomal DNA segment analyser by Roberta Estes, DNAeXplained blog.
-  by Dana Leeds