As well as trees and chromosome mapping, the site hosts:
Shared cM Tool
An interactive tool to show possible and probable relationships based on centimorgans shared
Beta version with updated probabilities
Bucketing New
A tool that can help group matches into maternal and paternal (or link them to a common ancestor) by filtering a list of segments using other lists of segments or matches from known relatives
Library of matches New
A collection by Cody Ely of real example matches and shared segments from a wide variety of relationships, to be used for relationship prediction and reference.
Cluster Auto Painter
Takes your cluster file and segments files and generates a chromosome map with the segments grouped by cluster.
Inferred segment generator
Copy and paste the segments that you and a close relative share with a DNA match, and this tool will output just the segments that you do not share with the match.
Shared cM Investigator New
Paste multiple sets of segments that siblings share with a match and this tool will estimate the total amount of DNA the parent is likely to have shared with this match.
Distinct segment generator
Copy and paste two or more sets of segments that multiple family members share with a single match. This tool will identify the distinct segments and return cM values for each along with the total cM.
Common segment generator
Copy and paste in two sets of segments. The tool will return just those that are common to all sets.
cM estimator
Enter the chromosome, start, and end positions and this tool will calculate an estimated number of centiMorgans (cM) to one decimal place.
Individual Match Filter
Paste in segments, and the tool will return the segments and total filtered cM according to the criteria you set
Cluster Formatter
A simple tool to extract a CSV of clusters and matches from your Genetic Affairs or MyHeritage autocluster output.
If you're looking for Y-DNA and mtDNA tools, I highly recommend http://scaledinnovation.com/