Trakerr.IO is described as 'App error intelligence platform - track errors and events all under one powerful platform'. There are more than 10 alternatives to Trakerr.IO, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, SaaS, Ruby on Rails and Mac. The best alternative is Sentry, which is both free and Open Source. Other great sites and apps similar to Trakerr.IO are GlitchTip (Free, Open Source), App Enlight (Freemium), Airbrake (Paid) and SessionStack (Freemium).
Reactflow give insight for marketers, product managers and UX designers about how their users experience their website. It reconstruct visitors activity like a movie for playback, while providing extracted console log, Heatmaps and funnel analytics.
May be the coolest cloud based error logger for .NET web applications. Based on the de-facto standard error component ELMAH, logging errors from your webserver requires nothing more than installing a NuGet package.