Local Observability on your machine.
Every OpenTelemetry signal your services emit, captured on your machine in real time. No cloud. No account. No config.
Every signal.
One place.
Traces
Full distributed trace timelines with sub-millisecond precision. Every span, attribute, and event across services.
Logs
Structured log capture with full-text search and filtering. Jump from any log line directly to its parent trace.
Metrics
Real-time counters, gauges, and histograms. Monitor latency, throughput, and error rates as they happen.
Profiles
Interactive flame graphs from pprof and other standard formats. Find performance bottlenecks without switching tools.
Up and running in minutes.
Download Sequins
Get the free desktop app for macOS. No account or sign-up required.
Set two environment variables
Point your OpenTelemetry SDK to Sequins running on localhost.
Run your app — you're done.
Traces, logs, metrics, and profiles appear immediately. No configuration needed.
# Point your SDK to Sequins OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318 OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf # Optional: name your service OTEL_SERVICE_NAME=my-app
Works with any OpenTelemetry SDK — Go, Python, Node.js, Java, Ruby, Rust, and more.
Built for your machine. Not someone else's cloud.
Complete data privacy
All telemetry stays on your machine. No data leaves your laptop — no vendor access, no cloud storage, ever.
Standard OTLP endpoint
Built-in gRPC and HTTP collectors on standard ports. No agents, no proxies, no SDK changes. Just point and go.
GPU-accelerated interface
Built with SwiftUI for a fast, native macOS experience. Navigate millions of spans at 60fps without breaking a sweat.
Take Sequins to production.
Sequins Pro is a clustered observability database built on the same open-source engine. Standard OTLP in, live SeQL queries out — with history on your object storage, in your cloud.