Weekdone - Market leader and innovator since 2013. Set structured quarterly goals, keep track of activities, and focus on getting real business results. Track weekly progress, provide feedback, and move everyone in a unified direction.

Hunter TechLookup - Create lists of websites by technology for free

Quantive - The best platform for turning strategy into results.

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

Workboard - Workboard is a performance and productivity app managers use with their teams to share goals, priorities, actions and feedback.

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!