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. Platforms: Linux, Windows. New: CMake support for MS VS 2022, RAD Studio 12

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

A C++ diagnostic logging API that is simple to use, 100% type-safe, generic, infinitely-extensible, atomic, platform-independent, and extremely efficient. And, best of all, it upholds the spirit of C: you only pay for what you use.

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

"Java log viewer" is a GUI to easily view the java application logs generated by the "java.util.logging" package. The log must be formatted by the XMLFormatter class. It provides facilities in order to filter, to sort and to find log records.

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.

MakeLogic Tail is an advanced "tail -f" command with GUI. It needs JRE 5.0, hence it is 'Tail for Windows', Linux or 'Tail for Mac'. It shows the last few lines of a growing log file in real time. Provides many more easy to use features. Try it!

The libexplain project provides a library which may be used to explain Unix and Linux error messages. This will make your application's error messages much more understandable to your users.

this is a simple to use, iostreams-based, high performance, multi-threading, unicode, and cross-platform logging library for C++

CIMON (Configurable Integrated Monitoring system) is a monitoring service which provides a layer of abstraction to support monitoring and context-aware applications. Android applications can use the CIMON API to easily register monitors, and the CIMON monitoring service will integrate each of these requests to meet their needs efficiently. There are a variety of metrics supported related to system status and activity, sensors, and user activity. CIMON also supports registering of complex monitors which are represented by boolean expressions. These monitors can notify applications when a particular event or condition has occurred. In addition to the monitoring service, there is an administration app, shown in the screenshots, which allows you to easily add new monitors. For more complete information, check out the project homepage. The complete JavaDoc is available at the homepage. The source code is freely available and can be extended to include additional metrics.

Flogger - a Free Logger. An easy to use and easy to customize logging library that works on a wide range of operating systems. Write your log entries effortlessly and efficiently to the console, to a file, to a data base or to some other source.

Logapp is a wrapper utility that helps supervise the execution of applications that produce heavy console output (e.g. make, CVS and Subversion). It does this by logging, trimming, and coloring each line of the output before displaying it.

Windows Tail is a Windows version of Unix and Linux tail command. Tail for Windows. I wanted to make it easier to use tail in the windows environment. You can even add it to the open with dialog in windows explorer. This is great tool if you need to monitor log files. Now: Create Application Alerts! Email Alerts and SMS Alerts using SMTP! Record Tail Session to log a File! Saves location of tailed or viewed files! Works on Linux Systems using Mono! and much much more! The source code is now located in the svn repository https://svn.code.sf.net/p/windowstail/code/trunk. PS. .net 4 is required.

XLOG is a logging framework whose log files are XML documents.