Source: https://seerepo.com/compare/reacherhq/check-if-email-exists/vs/zeroclaw-labs/zeroclaw
Markdown source: https://seerepo.com/compare/reacherhq/check-if-email-exists/vs/zeroclaw-labs/zeroclaw.md
Description: check-if-email-exists and zeroclaw share 7 technologies: lapin, Tokio, tokio-executor-trait, tokio-reactor-trait, log, tracing, and tracing-subscriber. Both are written in Rust.

# check-if-email-exists vs zeroclaw

check-if-email-exists and zeroclaw share 7 technologies: lapin, Tokio, tokio-executor-trait, tokio-reactor-trait, log, tracing, and tracing-subscriber. Both are written in Rust.

- [reacherhq/check-if-email-exists](https://seerepo.com/r/reacherhq/check-if-email-exists): Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
- [zeroclaw-labs/zeroclaw](https://seerepo.com/r/zeroclaw-labs/zeroclaw): Fast, small, and fully autonomous AI personal assistant infrastructure, any OS, any platform — deploy anywhere, swap anything 🦀

## What they share and what sets them apart

- In common: lapin, Tokio, tokio-executor-trait, tokio-reactor-trait, log, tracing, tracing-subscriber
- Only in check-if-email-exists: sqlx, Sentry, warp, csv, lambda_runtime
- Only in zeroclaw: Tauri, axum, tower, objc2-app-kit, objc2-foundation, rumqttc-v4-next, rusqlite, SQLite, Postgres, lru, tauri-plugin-store, wasmtime, Vite, React, react-router-dom, crossterm, Ratatui, console, dialoguer, Slint, hmac, jsonwebtoken, scrypt, image, mail-parser, async-imap, qrcode, infer, lettre, pulldown-cmark, zip, schemars, jsonschema, OpenTelemetry, opentelemetry-otlp, prometheus, tracing-log, Tailwind CSS, @uiw/codemirror-theme-github, @codemirror/lang-markdown, @uiw/react-codemirror, Lucide, react-markdown, remark-gfm, rehype-highlight

## Side by side

| | check-if-email-exists | zeroclaw |
|---|---|---|
| Size | 8,417 lines written, 64 code files | 1,544,804 lines written, 1,152 code files |
| Who writes it | 1.1% of its commits signed by AI. With Claude Code and GitHub Copilot | 14.1% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, Codex, Devin, and CodeRabbit |
| Activity | Last push November 9, 2026, 1,423 commits, 10,478 stars | Last push November 6, 2026, 5,441 commits, 33,152 stars |
| Tests | 1 test files | 226 test files. 10.7% 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, check-if-email-exists or zeroclaw?

zeroclaw, with 1,544,804 lines written; check-if-email-exists has 8,417.

The proof: [zeroclaw-labs/zeroclaw's code at commit 92098cc](https://github.com/zeroclaw-labs/zeroclaw/tree/92098cc0141d31cdb9eef20c55aa34e82520a865)

### Which has more GitHub stars, check-if-email-exists or zeroclaw?

zeroclaw, with 33,152 stars; check-if-email-exists has 10,478.

The proof: [zeroclaw-labs/zeroclaw on GitHub](https://github.com/zeroclaw-labs/zeroclaw)

### Which has more tests, check-if-email-exists or zeroclaw?

zeroclaw, with 226 test files; check-if-email-exists has 1.

The proof: [zeroclaw-labs/zeroclaw's code at commit 92098cc](https://github.com/zeroclaw-labs/zeroclaw/tree/92098cc0141d31cdb9eef20c55aa34e82520a865)

### Which was updated more recently, check-if-email-exists or zeroclaw?

check-if-email-exists: its last push was on November 9, 2026, and zeroclaw's on November 6, 2026.

The proof: [reacherhq/check-if-email-exists's commits on GitHub](https://github.com/reacherhq/check-if-email-exists/commits)

### Which has more commits signed by AI, check-if-email-exists or zeroclaw?

zeroclaw: an AI signed 14.1% of its commits, with Claude Code, GitHub Copilot, Cursor, Codex, Devin, and CodeRabbit; in check-if-email-exists, 1.1%.

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

## Sources

- reacherhq/check-if-email-exists: Read on November 13, 2026, at commit d548bb4 (https://github.com/reacherhq/check-if-email-exists/tree/d548bb495d9c2de6edb22f8ea83c63ea54f4cdf4)
- zeroclaw-labs/zeroclaw: Read on November 7, 2026, at commit 92098cc (https://github.com/zeroclaw-labs/zeroclaw/tree/92098cc0141d31cdb9eef20c55aa34e82520a865)

## 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.