Hotjar.com - visitor tracking,surveys, heatmaps, visitor recordingClickfunnels.com
- for building out landing pages, funnels, sales pages, order forms and a lot more
Conversionfly.com - for tracking and ROI measurement
Geru.com for revenue forcasts
Similarweb.com - competitive analysis
Spyfu.com - same
Perfectaudience.com - retargeting
I use a few more tools but this is what i mostly use on a weekly basis.