Source: https://seerepo.com/compare/caddyserver/caddy/vs/jaegertracing/jaeger
Markdown source: https://seerepo.com/compare/caddyserver/caddy/vs/jaegertracing/jaeger.md
Description: caddy and jaeger share 7 technologies: go.uber.org/zap, Prometheus, go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp, go.opentelemetry.io/otel, go.opentelemetry.io/otel/trace, github.com/prometheus/client_model, and go.opentelemetry.io/otel/sdk/metric. Both are written in Go.

# caddy vs jaeger

caddy and jaeger share 7 technologies: go.uber.org/zap, Prometheus, go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp, go.opentelemetry.io/otel, go.opentelemetry.io/otel/trace, github.com/prometheus/client_model, and go.opentelemetry.io/otel/sdk/metric. Both are written in Go.

- [caddyserver/caddy](https://seerepo.com/r/caddyserver/caddy): Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS
- [jaegertracing/jaeger](https://seerepo.com/r/jaegertracing/jaeger): CNCF Jaeger, a Distributed Tracing Platform

## What they share and what sets them apart

- In common: go.uber.org/zap, Prometheus, go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp, go.opentelemetry.io/otel, go.opentelemetry.io/otel/trace, github.com/prometheus/client_model, go.opentelemetry.io/otel/sdk/metric
- Only in caddy: chi, etcd, github.com/yuin/goldmark, OpenTelemetry, go.opentelemetry.io/contrib/bridges/prometheus
- Only in jaeger: net/http, MCP, otelgrpc, go.opentelemetry.io/otel/metric, go.opentelemetry.io/otel/exporters/otlp/otlptrace, go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc, go.opentelemetry.io/otel/exporters/prometheus, go.opentelemetry.io/otel/sdk, github.com/prometheus/common

## Side by side

| | caddy | jaeger |
|---|---|---|
| Size | 135,432 lines written, 227 code files | 188,919 lines written, 548 code files |
| Who writes it | 0.9% of its commits signed by AI. With Claude Code, GitHub Copilot, Gemini CLI, and Amp | 7.2% of its commits signed by AI. With Claude Code, GitHub Copilot, and Cursor |
| Activity | Last push November 4, 2026, 2,817 commits, 78,770 stars | Last push November 4, 2026, 4,964 commits, 23,372 stars |
| Tests | 193 test files. 65.6% of its code files have a test that imports them | 680 test files. 83.4% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, caddy or jaeger?

jaeger, with 188,919 lines written; caddy has 135,432.

The proof: [jaegertracing/jaeger's code at commit d723f91](https://github.com/jaegertracing/jaeger/tree/d723f91447f29a345c288f37eb8d1ce7807bc0be)

### Which has more GitHub stars, caddy or jaeger?

caddy, with 78,770 stars; jaeger has 23,372.

The proof: [caddyserver/caddy on GitHub](https://github.com/caddyserver/caddy)

### Which has more tests, caddy or jaeger?

jaeger, with 680 test files; caddy has 193.

The proof: [jaegertracing/jaeger's code at commit d723f91](https://github.com/jaegertracing/jaeger/tree/d723f91447f29a345c288f37eb8d1ce7807bc0be)

### Which was updated more recently, caddy or jaeger?

Both got their last push on November 4, 2026.

The proof: [caddyserver/caddy's commits on GitHub](https://github.com/caddyserver/caddy/commits)

### Which has more commits signed by AI, caddy or jaeger?

jaeger: an AI signed 7.2% of its commits, with Claude Code, GitHub Copilot, and Cursor; in caddy, 0.9%.

The proof: [the commits each tool signed in jaegertracing/jaeger](https://seerepo.com/r/jaegertracing/jaeger/ai)

## Sources

- caddyserver/caddy: Read on November 4, 2026, at commit c849256 (https://github.com/caddyserver/caddy/tree/c8492563eefcb3c5afbc00f25e7b001ffc6c7d11)
- jaegertracing/jaeger: Read on November 4, 2026, at commit d723f91 (https://github.com/jaegertracing/jaeger/tree/d723f91447f29a345c288f37eb8d1ce7807bc0be)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.