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RoRvsWild
Ruby on Rails application performances and exceptions monitoring.
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Active Hashcash
Protect Rails applications against bots and brute force attacks without annoying humans.
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Redis Dashboard
Sinatra app to monitor Redis servers.
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Type Scopes
Automatic scopes for ActiveRecord models.
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Teamodoro
Synchronize pomodoros with your coworkers.
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Ariato
Web UI framework to improve accessibility.
www.quora.com/what-are-the-best-practices-for-online-forms