Magnetic - Magnetic is an all-in-one agency management software built for productivity.

Hunter TechLookup - Create lists of websites by technology for free

Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.

xZeitgeist - The most popular tweets categorized and ranked, every day

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

Techmap.io - Techmap is a workplace search engine to find companies using technologies (e.g., Rails, PHP, Java, etc.) that are used internally. Finally, a "Google for Workplaces" that helps people find a place to work with technologies they love!