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

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

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.

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.

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.

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.

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

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.

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.

Syslog-slogger can be used to generate controlled,random syslogs.Syslogs to be genereated r listed in a file and can contain list of values - one of which would randomly used to create the message. Syslog generation rate can be controlled as well

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.

Please wait ! It will be soon. I'm not finished yet. I'm sorry. JENNOM - Java Enterprise Network Nodes Monitor.

A powerfull tool for analysing application servers logs (websphere, websphere portal, j2ee, custom) in a cluster (or not). It can analyse any log format thanks to a parser plugin approache. You can easily develop your own parser in java (for jboss, bea,.

log2web is a software intended to expose on a simple web page the logs generated by log4j. The objective is to have an online log viewing tool to replace a "tail -f" plus some other benefits.

Androger is file logger, that shows logged files in GUI interface. Has got support for watching multiple files, and filtering their content. It's suppose to be fast, simple & robust. Just run it and chose log file to be watched. This application requires Java 7 or greater to be installed (https://www.java.com/en/download/).

DJP - free portable cross-platform desktop graphical multi pinger, 100%-pure java. Local and remote (to syslog-server) logging support. At first DJP use ICMP for ping, if it is unavailable, it tries to check hosts with TCP/echo. Use standart OS ICMP packet-size - Linux=64 bytes, Windows=32 bytes. In addition to local-log also present syslog-server support: then any host down, DJP write message to local log and can send message to syslog-server. TCP port scaner and Telnet connection to host support. Also support backup/restore DB+CFG files to/from zip-archive. Simple and intuitive GUI - Graphical User Interface. Successfully tested in Windows and Linux for more than 100 hosts. Example of using CDI (Weld) and JPA (EclipseLink / OpenJPA) in Java SE application. Support both IPv4 and IPv6. Need only JRE 1.8 - https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html . See also Jennom project - http://jennom.sourceforge.net

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

An adaptable, platform-agnostic application incident reporting infrastructure ranging from logging libs and webservice-based reporting to a J2EE logging server to a pluggable connection to issuemanagers.

jMorse generates audible morse code from input text. jMorse is written in java and can be used via ant, log4j, java logging, or directly in-code.

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 !"

Analog4J is a tool for analysing Logginginformation. Loginfo can come from files or via online sources like sockets (like log4J SocketAppenders). Loginfo can be displayed, filtered and is prepared in statistics (events per time, etc.)

Anicetus is an application telemetry framework. Anicetus defines a language neutral standard for publishing streams of facts about a running application.