LoggerPro for Delphi

June 4, 2026 · View on GitHub

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📖 The official guide — install, API reference, tutorials, code samples, FAQ:

https://www.danieleteti.it/loggerpro/

Async, pluggable, production-proven logging framework for Delphi. Used in thousands of applications worldwide since 2010.

Async by design - non-blocking, zero impact on your app's hot path
20+ built-in appenders - File, Console, HTTP, ExeWatch cloud observability, Grafana Loki via LogFmt, ElasticSearch, UDP Syslog, Windows Event Log, Database, ...
Fluent Builder API - Serilog-style configuration
JSON configuration - reshape the logger at deploy time without rebuilding
Structured logging - first-class LogParam context
Cross-platform - Windows, Linux, macOS, Android, iOS
Thread-safe, DLL-safe, Apache 2.0

🆕 JSON configuration - reshape your logger at deploy time without rebuilding
🆕 HTML live log viewer - self-contained .html with filters, search, export, live tailing
🆕 ExeWatch integration - first-class cloud observability via ExeWatch
🆕 Pluggable appenders - optional backends self-register, just add the uses clause
🆕 LogFmt renderer - spec-compliant key=value output for Loki, humanlog, ripgrep
🆕 FileBySource appender - per-tenant subfolders with day+size rotation
🆕 Runtime log level - change the global gate on the fly via ILogWriter.MinimumLevel
🆕 UTF-8 console output - correct Unicode in Docker and Windows consoles
🆕 DLL-safe init - fixes the Windows Loader Lock deadlock
🆕 ElasticSearch auth - Basic / API Key / Bearer Token
🆕 UDP Syslog local time option
🆕 GetCurrentLogFileName API on file appenders

Apache License 2.0 - free for personal and commercial use.

Daniele Teti

LoggerPro - Professional Logging for Professional Delphi Developers
📖 Full documentation →