OneUp - Schedule and automate posts on Facebook, Instagram, Twitter, Pinterest, LinkedIn, and Google My Business.
BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks
Holly Website Audit - Free, brandable website audit for your potential clients
Dead Link Checker - Check for broken links on any website
Competitive Keyword Generator - Discover your best competitor comparison keywords — free
LinkChecker - LinkChecker is a free, GPL licensed website validator.