Outseta - The "lean" tech stack for SaaS start-ups
Analytics Pack - A curated directory of the best startup metrics
Cardlife - Track all your business subscriptions with Cardlife.
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
Picocandy - Stickers As a Service (SaaS) !
SaaS Surf - SaaS Surf is a list dedicated to providing developers, designers, entrepreneurs, and makers with the best SaaS resources and products.