Chainsaw is a companion application to Log4j written by members of the Log4j development community. Chainsaw can read log files formatted in Log4j's XMLLayout, receive events from remote locations, read events from a DB, it can even work with the JDK 1.4 logging events. 

 It has dynamic and powerful filterting which helps to locate stuff easier(e.g. "LOGGER == 'com.mycompany' &amp;&amp; LEVEL == ERROR" ).

Chainsaw is a companion application to Log4j written by members of the Log4j development community. Chainsaw can read log files formatted in Log4j's XMLLayout, receive events from remote locations, read events from a DB, it can even work with the JDK 1.4 logging events.

Chainsaw - log viewer and analysis tool

Clarity is a Splunk like web interface for your server log files. It supports searching (using grep) as well as trailing log files in realtime. It has been written using the event based architecture based on EventMachine and so allows real-time search of very large log files.

Clarity - Web interface for the grep

Logsandra is a log management application written in Python and using Cassandra as back-end. It is written as demo for cassandra but it is worth to take a look. It provides support to create your own parser. Logsandra consists of two main scripts logsandra-httpd.py and logsandra-monitord.py. logsandra-httpd should run on one server and logsandra-monitord should run on all servers producing log files. Logsandra-monitord will send the data to the specified Cassandra Cluster.

Logsandra is a log management application written in Python and using Cassandra as back-end. It is written as demo for cassandra but it is worth to take a look. It provides support to create your own parser.

Logsandra - log management using Cassandra

The Webalizer is a fast web server log file analysis program. It produces highly detailed, easily configurable usage reports in HTML format, for viewing with a standard web browser. It handles standard Common logfile format (CLF) server logs, several variations of the NCSA Combined logfile format, wu-ftpd/proftpd xferlog (FTP) format logs, Squid proxy server native format, and W3C Extended log formats. In addition, gzip (.gz) and bzip2 (.bz2) compressed logs may be used directly without the need for uncompressing.It supports IPv4 and IPv6 addresses, includes built-in distributed DNS lookup capability and native Geolocation services. It supports more than 20 languages.

The Webalizer is a fast web server log file analysis program. It produces highly detailed, easily configurable usage reports in HTML format, for viewing with a standard web browser. It handles standard Common logfile format (CLF) server logs, several variations of the NCSA Combined logfile format, wu-ftpd/proftpd xferlog (FTP) format logs, Squid proxy server native format, and W3C Extended log formats.

Webalizer - fast web server log file analysis

The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks (e.g. java.util.logging, logback, log4j) allowing the end user to plug in the desired logging framework at deployment time. 

slf4j - Simple Logging Facade for Java

Epylog is a syslog parser which runs periodically, looks at your logs, processes some of the entries in order to present them in a more comprehensible format, and then mails you the output. It is written specifically for large network clusters where a lot of machines (around 50 and upwards) log to the same loghost using syslog or syslog-ng. It publishes reports to a file with optional notification via email.

Epylog is a syslog parser which runs periodically, looks at your logs, processes some of the entries in order to present them in a more comprehensible format, and then mails you the output. It is written specifically for large network clusters where a lot of machines (around 50 and upwards) log to the same loghost using syslog or syslog-ng.

Epylog - a Syslog parser 

Indihiang Project is a web log analyzing tool. This tool analyzes IIS and Apache Web logs and generates real time reports. It has Web Log Viewer and analyzer. It is capable to analyze the trend from the logs. This tool also integrate with windows Explorer so you can attach a log file in to indihiang tool via context menu.

 <img src="/AppImages/Article/indihiang_screenshot.jpg" alt="" class="float-center">

Indihiang Project is a web log analyzing tool. This tool analyzes IIS and Apache Web logs and generates real time reports. It has Web Log Viewer and analyzer. It is capable to analyze the trend from the logs. This tool also integrate with windows Explorer so you can attach a log file in to indihiang tool via context menu.

Indihiang - IIS and Apache log analyzing tool

Ralis plugin to create a multi app logger based on MangoDB. It will automatically create methods based on the severity array default: ["warning", "log", "error"]

Ralis plugin to create a multi app logger based on MangoDB

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