Open Source Java Logging Software

Zabbix is an enterprise-class open source distributed monitoring solution designed to monitor and track performance and availability of network servers, devices and other IT resources. It supports distributed and WEB monitoring, auto-discovery, and more. An enterprise-class distributed monitoring solution for networks & apps

Flogger is a structured logging API for Java that decouples how you log from where logs ultimately go, making it easy to change backends without rewriting application code. Instead of building messages eagerly, it uses lazy parameter evaluation so expensive string building only happens when a log statement is actually emitted. The API encourages structured key–value context and fine-grained rate limiting, which helps keep logs informative without flooding systems during high-traffic or error storms. Handlers (backends) can route the same log record to multiple destinations—console, files, cloud logging—while preserving structured fields for search and alerting. Its fluent style reduces boilerplate and guides developers toward consistent log levels, formatting, and metadata. Because it’s designed for large codebases, Flogger emphasizes performance, binary size discipline, and compatibility with existing logging infrastructures.

Elasticsearch is a distributed, RESTful search and analytics engine that lets you store, search and analyze with ease at scale. It lets you perform and combine many types of searches; it scales seamlessly, and offers answers incredibly fast with search results you can rank based on a variety of factors. Elasticsearch can be used for a wide variety of use cases, from maps and metrics to site search and workplace search, and with all data types.

Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com

Logstash is a server-side data processing pipeline that dynamically ingests data from numerous sources, transforms it, and ships it to your favorite “stash” regardless of format or complexity. It supports and ingests data of all shapes, sizes and sources, dynamically transforms and prepares this data, and transports it to the output of your choice. Logstash is extensible, with over 200 plugins available to let you create and configure your pipeline how you choose.

Hyperic is application monitoring and performance management for virtual, physical, and cloud infrastructures. Auto-discover resources of 75+ technologies, including vSphere, and collect availability, performance, utilization, and throughput metrics.

Cyberoam iView; the Intelligent Logging & Reporting solution provides organizations network visibility across multiple devices to achieve higher levels of security, data confidentiality while meeting the requirements of regulatory compliance. To know more about Cyberoam and it’s security solutions visit us at www.cyberoam.com.

Logger is a simple, pretty and powerful logger for android. It provides a number of options and features. String format arguments are supported, as well as collections (only available for debug logs). Also, it features Json and Xml support (output will be in debug level). Log adapter checks whether the log should be printed or not by checking the log adapter function. If you want to disable/hide logs for output, override isLoggable method. The command "true" will print the log message, "false" will ignore it. Use filter for a better result. the tag PRETTY_LOGGER or your custom tag can be used. Make sure that wrap option is disabled. You can also simplify output by changing settings. Logger supports Timber Integration, as well.

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.

Provides an API that allows your Java applications to generate and log internationalized messages along with creating localized exceptions. Also provides Java annotations and an ANT task to help automatically generate language resource bundles.

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

Mysql Monitor Tool is a useful application to monitor multiple Mysql server instances. Its simple and effective user interface allows you to track the health of your servers, check parameters and visualize trends via real time charts.

MonPaaS is a monitoring service for OpenStack based on Nagios. MonPaaS enables a distributed monitoring platform for both cloud provider and cloud consumers.

A java.util.logging Handler for sending log messages via SMTP

Log Viewer is a custom-made freeware tool for viewing text files, specifically log files. The text viewing portion of the GUI is custom-made for improved memory usage and file navigating performance on very large files. The tool provides built-in grep (show and hide filtering on a line per line basis), color highlighting, multiple search strings, file tailing, and viewing multiple files as if they were one file.

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!

TailBlazer is a graphical version of the UNIX 'tail' utility. It allows you to monitor log files as they are written. New lines appear as they are written. TailBlazer takes this a step further by supporting pattern matching, filtering, and notification

Follow is a simple Java application which allows a user to monitor several log files concurrently. The source for this project is now being maintained at http://hallwaytech.github.com/follow

LogView helps manage multiple log files for easy viewing and filtering.

Lightweight graphical Java based file watcher similar in functionality to tail. Includes additional per-file features like pausing, setting polling frequency, font size, and buffer size, refresh, in-pause tail, and clear.

GeneSyS is an open generic framework for network and system management, based on intelligent software agents using web-services/SOAP. It is a supervision tool for monitoring, management and control of distributed applications built with Java, .NET, PHP.

Chainsaw is a GUI log viewer and filter for the Log4J package. It listens for LoggingEvent objects sent using the SocketAppender and displays them in a table. The events can be filtered based on Priority, Thread name, Category name and Message. It can als

ALF, The Automated Logging Framework, is a native logging framework for Java with the unique advantage of supporting automated method tracing. This platform-independent library allows developers to debug their applications quickly without adding code

Ajax is an open-source Java add-on collection mostly for classic desktop apps sporting new widgets (such as such as auto-complete textboxes or tree tables), new data models (such as as XML tree models), new common dialogs and much more.

The objective of this program is to check log files of your applications. It analyses them and tells you if the application works fine (or not). So that, you just receive one mail to say : "ok", or "some applications seem to go wrong !"