tailr

A blazing-fast log tail & search server.
Single binary, web UI, real-time streaming.

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View on GitHub Live Demo
Terminal
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See it in action

Real-time log tailing with multi-keyword filtering and log level detection.

tailr - http://localhost:7700
Follow Tail

Features

Real-time Tail

WebSocket-based live log streaming. Watch logs as they happen.

Fast Search

mmap-based grep with regex support. Search millions of lines instantly.

Single Binary

No dependencies, no runtime. Just drop the binary and go.

Log Level Detection

7 presets (General, Java, Python, PHP, Go, Rust, syslog) with custom colors.

Token Auth

Optional Bearer token for secure access. Config, env var, or Web UI.

Web UI

Built-in Vue 3 SPA. No separate frontend deployment needed.

Quick Start

# Download and extract
curl -L https://github.com/flolibio/tailr/releases/latest/download/tailr-x86_64-linux-musl.tar.gz | tar xz
./tailr --log /var/log/app.log

Open http://localhost:7700 in your browser.