Excipio is described as 'Innovative bug tracking software for your rails apps' and is an app in the Development category. There are more than 10 alternatives to Excipio for a variety of platforms, including Online / Web-based, Windows, Linux, Mac and .NET Framework. The best alternative is Sentry, which is both free and Open Source. Other great apps like Excipio are Rollbar (Freemium), Raygun (Paid), OverOps (Freemium) and Airbrake (Paid).
ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.
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.