Open Source Linux Log Parsers

csv-parser is a streaming CSV parsing library for Node.js designed for efficiency and correctness. It implements the stream API native to Node, allowing you to pipe a file or readable stream into the parser and process each row (as a JavaScript object or array) as soon as it's parsed — which is crucial for handling large CSV files without loading them entirely into memory. The parser handles standard CSV semantics including quoted fields, variable delimiters, escape sequences, and optional headers; this makes it robust for a variety of CSV dialects you might encounter. Because it works incrementally (row by row), it is well suited for ETL pipelines, data ingestion workflows, CSV-to-database imports, or any context where you need to process or transform large tabular data in Node.js efficiently. Using the .on('data') / .on('end') (or equivalent async patterns), you can accumulate, filter, transform, or stream data further downstream without waiting for the whole file.

Wow Log Parser is a combat log parser for the game World of Warcraft. The purpose of the program is to parse the files generated with the /combatlog command. The source code can be found on: http://www.gurre.eu/wowlogparser/forum

FastStats is a c-based replacement for HalfStats (http://www.halfstats.com/), a Half-Life log parser and reporting tool.

FWReport is a log parser and reporting tool for IPTables. It generates daily and monthy summaries of the log files, allowing the admin to free up substantial time, maintain better control over security of the network, and reduce unnoticed attacks.

Qmail log parser and vizualization. The qmail logs are parsed and put in a MySQL database accesible from a web interface. The web interface offers also various statistics build on the parsed logs.

Visual aid while playing Age of Conan. Display helpful information derived from combat logs, mostly related to raids.

PHP script to parser apache log. You can fetch by: IP Requests Request by IP Request by day hour and much more!

This is a ban log parser for BlackBagOps's Battlefield Remote Server Manager. It will take a adminlog.csv file from your server manager and create useful statistical information from it.

A Perl program that trims the statistics.csv file (generated by Battlefield Server Manager, http://blackbagops.com/bf1942/index.shtml) to exclude log entries older than x days, for use by Venkman's BFStats log parser, http://www.mkoehler.de/bfstats

Chrono-Stats is a Half-Life:Counter-Strike log parser. What makes it unique from any other, is the built in web panel. It lets you update stats, configurations, and the look of your stats, all through a web based admin panel.

This is a kicks and bans search engine that works with the Battlefield Server Manager from BBO. It is written in PHP/MySQL and has been tested in both Linux and Windows environments. It parses the adminlog.csv file locally or remotely via FTP.

Enterprise is an open source monitor and advanced log parser. Based on Enterprise ship state system controller of Star Trek, It is able to let you know about the state of your services in a given time.

Real time EverQuest log parser.

A quick and easy CGI Perl firewall log parser that gives an up to date look at logs created by ipchains. It diplays the firewall logs as a HTML page.

LAN log parser for counter-strike can be used to convert multiple names on log files to one name for every player. psychostats and HL stats don't work on LAN because of "wrong" WON IDs. and the nametrack doesn't work too, because of those nickfakers

Tools for the Budget SysAdmin<> Pix Log Parser: It parses pix logs for information and creates reports from it <> SGZLogs. Searches gzipped logs for multiple terms and saves reports.<>

Backup application for general files and folders in java.

This is a Real-Time Stats signature for use with the selectBF log parser. It's written in PHP/MySQL and tested in both Linux and Windows environments. The script pulls data from selectBF and using the GD Library,dynamically outputs the stats to images.

LogAnal is a quick hack to parse Apache Log Files and produce graphical and textual web server statistics. Works in incremental mode only. Supports Templates for the output HTML, as well as localization (defaults to English).

Generic log parser written in PHP for *nix systems. Log entries are analysed on the fly and consolidated into events that are similar. Results are then displayed via a webpage.

Insight, the analysis TechTool for developers is a platform independent tool for viewing & analying run time meta data of applications. It aids in trouble shooting problems, and aids the developer in every day work through very advanced log analysis.

NAMD Log Parser sorts through the log file generated by NAMD and extracts energy information to export to a graphing program or used in the basic graph provided.

Log parser and event generator

Postfix Log Parser in Python is a log analysis tool written in python language to get statistic reports and detect anomalous behaviours on a mail server based on Postfix and Cyrus

Pasi's Shannox Log Analyzer - A simple log parser to analyze Rageface's 'Face Rage' spell: uptime of the buff, targets and who has removed it - suitable for recognizing problems with tactics' execution.