DNA Painter
DNA painter has some fantastic free tools to get you started. You can also pay a sensible subscription cost for further access. At the moment I am still managing with the free tools but I will probably upgrade soon.
DNA and Genealogy Tools to Grow Your Family Tree | GEDmatch
GedMatch is a useful free tool for working with Ancestral DNA. You can find matches that are not on Ancestry or My Heritage.
Free Family Tree, Genealogy, Family History, and DNA Testing
I have had a My Heritage Subscription since I began working with DNA. It is a good place to find matches who may not be on Ancestry.
Find Your Ancestors & Family History - Genealogy & Ancestry - findmypast.co.uk
Find my Past is every bit as important for traditional genealogical research, especially as much of my Ancestry is from the UK. I particularly like how they present the census records.
WikiTree.com
I am part of the WikiTree community, I talk about why I love it in the blog post WikiTree Review Liking Up Genealogists.
MacFamilyTree - Modern genealogy for your Mac
I use MacFamily Tree for my main research. I switched to it primarily for the aesthetic. Preferably useful and beautiful is my way forward after all in my ongoing mission to declutter and organise my physical and digital worlds.
AncestryDNA® | DNA Tests for Ethnicity & Genealogy DNA Test
I use Ancestry to both access traditional research records and to link up with shared DNA cousins. It is a daily go to website when I an working on Genealogy.