Dr. Link Check - Broken link checker with malware and parked domain detection
CoinList - Build a diverse portfolio of pre-launch token investments
BrokenLinkCheck - Free Broken Link Checker / Online Dead Link Checking Tool - find bad hyperlinks
Crypto Buyer's Guide - Extensive cryptocurrency buying guide
DRKSpiderJava - DRKSpider is an open source website crawler (sitemap generator) and link checker. Features:
CoinCap.io - Shows the prices of different cryptocurrencies from ShapeShift.