This is an open source project. That means all pertinent files are (or will be) available. The Open Y files can be used for independent analysis. Results can be published and a non-commercial interface developed as long as the source data and our website are appropriately cited — and that I'm informed. (After all, the project as a whole can benefit from the input.) Note, however, that FTDNA, YFull, TheYTree, and YBrowse retain full rights to their data. Updates and development notes about the project can be found at the facebook group, Open Y-Tree.

• The Open Y haplogroup child/parent database
  From this, paths and whole trees can be constructed. But it's the haplogroup structure only. Full haplogroups, with its SNP members, is presently available only at https://ysnp.info/subclades.html. Once the work on that is done, that database will appear here.
  
  
• SNP information extracted from YBrowse.org
  Zipped file. Includes the SNP positions on the Y chromosome, ancestral and derived SNP values, and their names, including all alternate names.
  
  
• All multiple SNP names found in Open Y's database
  Labs and other entities register new SNP names at YBrowse.org. Although the problem now appears to be under control, there are thousands of SNPs having multiple names. (This list also includes the SNP data from TheYTree.) The Open Y project generally uses the names having the lowest order numeric portion of the name.
  
  
• FTDNA recurrent SNPs
  The data is space delimited. The first field is the SNP name followed by the haplogroups for which it's a member.
  
  
• YFull recurrent SNPs
  As above but for YFull.
  
  
• Longhand to shorthand haplogroup names
  This isn't a comprehenisve list. Included are only the longhand haplogroup names (i.e. A1b1) used by YFull. The second field is the preferred shorthand (SNP-based) names (i.e. A-PF1260). The conversion is essential to the Open Y project as its critical for preparing multiple databases for merging.
  
  
• Simple script to parse a child/parent database.
  Explanation is included in the file.
  
  
• Open Y haplogroups with member SNPs
  This zipped file is a space-delimited file, the first field beiing the SNP name followed by comma delimited haplogroups.
  
  
• Vertical haplogroup tree
  A zipped text-based vertical haplogroup (only) tree. Each line leads with tabs, one for each downstream generation. I've written a tool that creates an HTML horizontal tree from this format but the result is far too big for a browser. I'll see what I can do.