What software do wholesalers use for lead generation?

[Kyle Geoghagan]

When I first started my investing career, I started with DealMachine and was sending out Direct Mail Marketing. I probably sent thousands of mail and got little to no response. I moved over to BatchLeads to do SMS campaigns and receive a much higher response rate (even if it is a no). I was wondering what other softwares are out there (like maybe ListSource) that wholesalers use for lead generation?