zlog is a reliable, efficient, thread safe, flexible, pure C logging library. It was written because there were no good C logging libraries along the lines of Logback for Java or log4cxx for C++. printf can work, but can not be easily redirected or reformatted, and syslog is slow and designed for system use. It provides a syslog model, log format customization, multiple output, safe run-time reconfiguration, high performance, user-defined log levels, safe log rotation, a log4j-style key-value map, in-built debugging, and no external dependencies.
Lilith is a logging and access event viewer for the Logback logging framework. It has features comparable to Chainsaw, a logging event viewer for log4j. This means that it can receive logging events from remote applications using Logback as their logging backend. It uses files to buffer the received events locally, so it is possible to keep vast amounts of logging events at your fingertip while still being able to check only the ones you are really interested in by using filtering conditions.
CLIChart is intended for quick summarization and visualization of data, especially from system logs. It provides tools to extract and manipulate tabular summary data from text files, and to generate and view simple charts from tabular data on the command line. Charts can be displayed in a window and/or saved.
hslogger is a logging framework for Haskell, roughly similar to Python's logging module. hpodder lets each log message have a priority and source be associated with it. The programmer can then define global handlers that route or filter messages based on the priority and source. hslogger also has a syslog handler built in.
Bandit is a system of loosely-coupled components that provide consistent identity services and create a community that organizes and standardizes identity-related technologies in an open way, promoting both interoperability and collaboration. It implements open standard protocols and specifications so identity services can be constructed, accessed, and integrated from multiple identity sources. The Bandit system supports many authentication methods and provides user-centric credential management.
Logback is intended as a successor to the popular log4j project, and was designed by log4j's founder, Ceki Gulcu. The basic architecture is sufficiently generic so as to apply under different circumstances. It is divided into three modules. The Core module lays the groundwork for the other two modules, whereas the Classic module can be assimilated to an improved version of log4j. It natively implements the SLF4J API so that you can readily switch back and forth between logback and other logging systems, such as log4j or JDK14 Logging. The Access module integrates with Servlet containers to provide HTTP access log functionality. You can easily build your own modules on top of the Core module.
NmnLogger is a small set of PHP classes which provide a simple but effective logging mechanism, giving the ability to create complex and functional logging systems within minutes. NmnLogger relies on a small XML config file, where you can set up all your logging preferences. Logging drivers to dispatch logs to mail, text files, on screen, or to any destination for which you write a driver. The format in which the log is displayed can be modified.
PTT helps users to analyze and understand correction and performance problems for multi-threaded applications. It shows when a program calls NPTL routines and when it exits from them, with details about the internal mechanisms of the library. It is a post mortem analysis; the trace can be analyzed once the application has stopped. Three different trace formats are provided: a machine readable text format, a human readable text format, and a graphical format. The graphical format is obtained thanks to Pajé, an interactive visualization tool.
mysqmail-postfix-logger is a (very small) daemon that logs all SMTP traffic to an SQL database. It splits the information by domain and user for the From and To fields, making it very easy to count all the SMTP traffic for a given domain name. DTC (Domain Technologie Control) uses it for logging the SMTP traffic.