Open Source Logging Software

log4cplus is a simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. It is modelled after the Java log4j API.

A library of C++ classes for flexible logging to files (rolling), syslog, IDSA and other destinations. It is modeled after the Log for Java library (http://www.log4j.org), staying as close to their API as is reasonable. Home: https://log4cpp.sourceforge.net Platforms: Linux, Windows, MacOS. New: CMake, CTest support for MS VS 2022, RAD Studio 12

Beautiful, fast, and open-source viewer for your app logs. Forget scrolling through raw log files to find the errors or debug logs you're looking for. Forget about SSH'ing onto the production server just to read the logs. Log Viewer helps you quickly and clearly see individual log entries, to search, filter, and make sense of your Laravel logs fast. It is free and easy to install.

Lilith is a logging and access event viewer for Logback, log4j & java.util.logging. It has features comparable to Chainsaw for log4j. This means that it can receive logging events from remote applications using Logback as their logging backend

spdlog is a header only library. Just copy the files under include to your build tree and use a C++11 compiler. It provides a python like formatting API using the bundled fmt lib. spdlog takes the "include what you need" approach, your code should include the features that actually needed. For example, if you only need rotating logger, you need to include "spdlog/sinks/rotating_file_sink.h". spdlog provides various log targets, which are, rotating log files, daily log files, console logging (colors supported), syslog, Windows event log, and Windows debugger (OutputDebugString(..)). Easily extendable with custom log targets. Log filtering, log levels can be modified in runtime as well as in compile time. Support for loading log levels from argv or from environment var. Backtrace support, store debug messages in a ring buffer and display later on demand.

Allows you to redirect all communication data from RS232 compliant serial port device into a text file for further analysis. RS232 Data Logger redirects data from any available serial port/ports and works under Virtual Machine.

Logbook is an extensible Java library to enable complete request and response logging for different client- and server-side technologies. It satisfies a special need by a) allowing web application developers to log any HTTP traffic that an application receives or sends b) in a way that makes it easy to persist and analyze it later. This can be useful for traditional log analysis, meeting audit requirements or investigating individual historic traffic issues. Logbook is ready to use out of the box for most common setups. Even for uncommon applications and technologies, it should be simple to implement the necessary interfaces to connect a library/framework/etc. to it.

Extract internal monitoring data from application logs for collection in a time-series database. mtail is a tool for extracting metrics from application logs to be exported into a timeseries database or timeseries calculator for alerting and dashboarding. It fills a monitoring niche by being the glue between applications that do not export their own internal state (other than via logs) and existing monitoring systems, such that system operators do not need to patch those applications to instrument them or writing custom extraction code for every such application. The extraction is controlled by mtail programs which define patterns and actions. Metrics are exported for scraping by a collector as JSON or Prometheus format over HTTP, or can be periodically sent to a collectd, StatsD, or Graphite collector socket. Precompiled binaries for released versions are available in the Releases page on Github. Using the latest production release binary is the recommended way of installing mtail.

Non-stealth keylogger for Windows. Records mouse and keyboard (precision~10-15ms), log of events (disk size~2.5k/s) + log of operations (~ 0.2k/s). Standalone, with local copy of Python: unzip to install, delete to uninstall.NEW: hidden/visible icon

SysTools is a library of utility routines & classes for Borland Delphi, C++Builder, & environments that support COM. It includes 1-D & 2-D bar codes, sorting, money routines, logging, high-precision math, a run-time math expression analyzer, & much more.

LOG4PLSQL is a PLSQL framework for logging in all PLSQL code this project was born from the log4J spirit (and use it). You have the possibility to log apart from transaction and use all LOG4J feature.

Cinemagoer is a Python package useful to retrieve and manage the data of the IMDb movie database about movies, people, characters and companies. Platform-independent, it can retrieve data from both the IMDb's web server and a local copy of the whole db.

Serial line sniffer (slsnif). slsnif is a serial port logging utility. It listens to the specified serial port and logs all data going through this port in both directions.

CTrace is a multi-threaded trace debug library written in C. It provides a simple, fast, well documented trace utility for applications and as such is especially suitable for use in real-time embedded applications.

Monitors several server logs at real-time simultaneously all in one tool. The viewer updates and scrolls automatically when the log file changes... a MUST HAVE utility tool for developers. Visit http://tracelog.sourceforge.net for more information.

File system/directory monitoring utilities with loggin and task processing support (can execute files or make a WCF service call). Multiple configuration options. Source code libraries can be used to create a custom file system monitor.

Weblooker monitors serveral services on multiple systems for their status, up- and downtimes. A webgui and Android client to view the current status and logged downtimes is available as separately package.

logview4net is a log viewer/log monitor for data created by various sources. It can listen to UDP, tail a file, tail a SQL table, monitor the eventlog and watch RSS and Atom feeds. It requires the Microsoft .NET Framework 2.0

This is a C++ logging library implementation which is accepted to Boost. It aims for extensibility and flexibility while moderately affecting user's application performance. Since being accepted, the library is developed and distributed as a part of Boost. Please, visit www.boost.org for more info.

The ProM Import Framework allows to extract process enactment event logs from a set of information systems. These can be exported in the MXML format, which is the standard event log data format for Process Mining analysis techniques.

Log4net has moved to http://logging.apache.org/log4net. The .NET implementation of the popular log4j Java API providing flexible and arbitrarily granular control over log management and configuration.

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.

LogView4J is a Java Swing Log4J socket listener GUI that makes application debugging simple. It has an intuitive user interface and is designed from the ground up for use of use, speed and stability, with features specifically tailored for Java developer

Microlog is a small, yet powerful logging library for mobile devices based on the Log4j API. Supports Java ME (J2ME) and Android. Logs to device, to PC or to servers online. Used in all phases from development on emulator/device to outdoor field-testing.

This is a port to Qt/C++ of the Jakarta project's excellent log4j package. Qt users can now benefit from a logging package that can be configured at run-time, thus minimizing (and ideally, eliminating) recompilation.