Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.

SMMRY - Summarize articles, text, websites, essays and documents for free with SMMRY.

Rollbar - Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. Ruby, Python, PHP, Node.js, JavaScript, and Flash libraries available.

Free Summarizer - Summarize *any* text online in just a few secs. *MAGIC*

ErrorFeed - Error tracking and exception handling for developers, startups, and freelancers.

TLDR This - Automatically summarize any article or webpage in a click.