Hunter TechLookup - Create lists of websites by technology for free
Twishort - Twishort is a best Twitter app for writing longer tweets. Tweet more than 140 characters
xZeitgeist - The most popular tweets categorized and ranked, every day
Privatter - Privatter is the easy way to share long texts and pictures set limit on your followers. You can post them by Sign in with Twitter account to this site.
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!
5Tweets.com - Type a long tweet and 5Tweets will rewrite it into multiple tweets with a tweet count.