
Description: log4net is an open source logging framework for .NET applications. It is modeled after log4j and provides rich logging capabilities including support for XML, database, console, file, and custom appenders.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: elmah.io is a cloud-based error logging and monitoring service for .NET web applications. It integrates seamlessly with ASP.NET apps to log errors and exceptions and provides features like search, alerts, integration with services like Slack and GitHub, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API