logswan ☆

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Description:
Fast Web log analyzer using probabilistic data structures

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: log-analysis analytics web-server data-science cli

Install: brew install logswan

About:
Logswan is a high-performance web log analyzer designed for large-scale log processing. It utilizes probabilistic data structures like HyperLogLog and Count-Min Sketch to provide accurate approximations of unique visitors and top pages. This approach enables extremely fast analysis with minimal memory usage, making it ideal for real-time reporting on massive log files.

Key Features:

Uses HyperLogLog for fast unique visitor counting
Processes logs with minimal memory footprint
Supports Common Log Format (CLF) and Combined Log Format
Generates JSON output for easy integration

Use Cases:

Real-time analysis of high-traffic web server logs
Generating daily visitor statistics for large websites
Security auditing to identify suspicious traffic patterns

Alternatives:

GoAccess – GoAccess provides real-time terminal-based dashboards, while Logswan focuses on speed and low memory usage for massive datasets via probabilistic structures.
AWStats – AWStats offers detailed historical reports but is slower and more resource-intensive compared to Logswan's lightweight, approximation-based approach.

Version History

Detected	Version	Rev	Change	Commit
Sep 14, 2025 8:20pm		0	VERSION_BUMP	7c70ee30
Sep 14, 2024 3:22pm		0	VERSION_BUMP	86245e48