Open Source Apple iPhone Logging Apps

NSLogger is a high performance logging utility which displays traces emitted by client applications running on macOS, iOS and Android. It replaces traditional console logging traces (NSLog(), Java Log). The NSLogger Viewer runs on macOS and replaces Xcode, Android Studio or Eclipse consoles. It provides powerful additions like display filtering, defining log domain and level, image and binary logging, message coloring, traces buffering, timing information, link with source code, etc. Accept connections from local network clients (using Bonjour) or remote clients connecting directly over the internet. Online (application running and connected to NSLogger) and offline (saved logs) log viewing. Buffer all traces in memory or in a file, send them over to viewer when a connection is acquired. Define a log domain (app, view, model, controller, network…) and an importance level (error, warning, debug, noise…).

CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for macOS, iOS, tvOS and watchOS. First, install CocoaLumberjack via CocoaPods, Carthage, Swift Package Manager or manually. Then use DDOSLogger for iOS 10 and later, or DDTTYLogger and DDASLLogger for earlier versions to begin logging messages. Carthage is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods. As of CocoaLumberjack 3.6.0, you can use the Swift Package Manager as integration method. If you want to use the Swift Package Manager as integration method, either use Xcode to add the package dependency or add a dependency to your Package.swift. CocoaLumberjack also ships with a backend implementation for swift-log. Simply add CocoaLumberjack as dependency to your SPM target and also add the CocoaLumberjackSwiftLogBackend product as dependency to your target.

Logan is a log platform with the ability to collect, store, upload and analyze front-end logs. We provide five components, including iOS SDK, Android SDK, Web SDK, analysis services Server SDK and LoganSite. In addition, we also provide a Flutter plugin Flutter Plugin. LoganSite provides a visualized way for developers to scan and search logs uploaded from App and Web. To put it simply, the traditional idea is to piece together the problems that appear in the logs of each system, but the new idea is to aggregate and analyze all the logs generated by the user to find the scenes with problems. In the future, we will provide a data platform based on Logan big data, including advanced functions such as machine learning, troubleshooting log solution, and big data feature analysis.

NLog is a flexible and free logging platform for various .NET platforms, including .NET standard. NLog makes it easy to write to several targets. (database, file, console) and change the logging configuration on-the-fly. NLog has support for structured and traditional logging. The focus for NLog is high performance, easy-to-use, easy to extend and flexible to configure. NLog is very easy to configure, both through configuration file and programmatically. Even without restarting the application, the configuration can be changed. Every log message can be templated with various layout renders. Even though NLog has targets and pre-defined layouts, you can write custom targets or pass custom values. Fully support for structured logging. Targets are used to display, store or pass log messages to another destination. NLog can dynamically write to one of multiple targets for each log message.

There is always this friction when it comes to debugging native apps: you can’t inspect anything that happens behind the scenes unless you use special tools, not even network requests. That’s not the case on the web with tools like Safari Web Inspector. I wanted to bring something similar to native apps. What is Pulse? It’s a persistent logger with a network inspector, but not just a tool. It’s also a framework. PulseCore.framework (iOS, macOS, watchOS, tvOS) provides a logger itself and a network proxy for automatically capturing network requests. PulseUI.framework (iOS, macOS, watchOS, tvOS) containing all the UI components you’ll see on the screenshots. Document-based Pulse apps (iOS, macOS) to view logs shared from other devices. As a developer, you integrate the frameworks into your app and configure them to capture logs and network traffic. You then add a way to display a Pulse console to view logs right on the device.

This lightweight and open source framework provides logging for Delphi. It is full featured, supports multiple Loggers, Appenders and Formaters, but comes in a single file "nxLogging.pas". You can use it free for both, private and commercial applications. Target compilers are from Delphi 2010 to Delphi X Seattle and Berlin, it is cross plattform, for Firemonkey and VCL. You can use file logging in various strategies (plain, rolling file appender, ...) and remote logging is also supported. The framework can send log messages immediately to log servers, a central database for all your logmessages from all your installations. There is also a free tool "nxTail" for live viewing logs. This can tail your log files and can be connected to log servers, to show all logs from all sources.