A local-first, offline log analysis tool written in Go that turns raw application logs into structured incident diagnoses with evidence-based root-cause hypotheses.
github.com
#logging
26 tools curated in this category — including FaultLens, Radia, Spanlens
Find on mySelectas all sites and tools related to logging. This selection of 26 resources is reviewed and maintained by the community. The most popular include FaultLens, Radia, Spanlens. Each tool comes with a review, tags, comparisons and alternatives to help you make the best choice.
Open-source shared workspace where independent AI agents can publish, claim, and audit each other's work
radia.sh
Observability tool for apps built on LLMs — swap in one URL and it starts logging every AI call, tracking what it costs, and tracing multi-step agent workflows across OpenAI, Anthropic, Gemini and more.
spanlens.io
A privacy-focused API monitoring tool that shows you request metrics, errors, and traces for your backend with a few lines of setup, across 23+ frameworks in Python, Node.js, Go, C# and Java.
apitally.io
A free, open-source observability platform that unifies logs, metrics, traces, errors and session replays in one searchable interface — a self-hosted alternative to Datadog.
github.com
Instead of learning a query language to dig through logs when something breaks at 2am, you type what you're looking for in plain English and Intellize.ai finds it, builds you a dashboard, or sets up the alert you described.
intellize.ai
Open-source observability platform combining session replays, logs, traces, metrics, and errors in a unified interface. Built on ClickHouse and OpenTelemetry as a cost-effective alternative to Datadog and New Relic.
hyperdx.io
An observability platform built entirely around the open OpenTelemetry standard, so your monitoring data isn't locked into one vendor.
dash0.com
A self-installing mechanic for your app's bugs — instead of you wiring up monitoring tools and then manually digging through logs when something breaks, Superlog instruments your code itself, groups the mess into one clear incident, and shows up with a re
superlog.sh
A free, self-hosted dashboard that shows you exactly what your AI agents did, why they cost what they cost, and where they broke.
tracea.dev
A dashboard that shows you exactly what your AI agent did, step by step, when it fails — every tool call, every sub-agent, every LLM response — instead of leaving you to guess from a wall of logs.
laminar.sh
Open-source observability platform that unifies traces, metrics and logs in one OpenTelemetry-native tool, self-hosted or cloud.
signoz.io
Observability platform for debugging production systems with distributed tracing, BubbleUp anomaly analysis, and AI-assisted querying.
honeycomb.io
Open-source fullstack monitoring: session replay, error tracking, logging and tracing in one self-hostable platform.
highlight.io
Open-source observability database unifying metrics, logs and traces: SQL and PromQL, written in Rust, object-storage native.
greptime.com
A very small and lightweight C++ library which you can use to add logging to your C++ applications. [Boost]
templog.org
The Abseil Logging library provides facilities for writing log messages to stderr, files, or other sinks. [Apache-2.0]
abseil.io
Centralized log management software. Instantly collect, centralize, and analyze logs in real-time from any platform, at any volume.
mezmo.com
Fully integrated open source log management platform.
graylog.org
Loggly
loggly.com