Source: https://seerepo.com/compare/block/buzz/vs/stalwartlabs/stalwart
Markdown source: https://seerepo.com/compare/block/buzz/vs/stalwartlabs/stalwart.md
Description: buzz and stalwart share 8 technologies: Redis, Tokio, rusqlite, jsonwebtoken, infer, imagesize, quick-xml, and zip. Both are written in Rust.

# buzz vs stalwart

buzz and stalwart share 8 technologies: Redis, Tokio, rusqlite, jsonwebtoken, infer, imagesize, quick-xml, and zip. Both are written in Rust.

- [block/buzz](https://seerepo.com/r/block/buzz): A hive mind communication platform
- [stalwartlabs/stalwart](https://seerepo.com/r/stalwartlabs/stalwart): All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

## What they share and what sets them apart

- In common: Redis, Tokio, rusqlite, jsonwebtoken, infer, imagesize, quick-xml, zip
- Only in buzz: Flutter, flutter_hooks, axum, tower, psycopg, sqlx, shared_preferences, flutter_secure_storage, moka, rust-s3, lru, Vite, React, Tauri, @tanstack/react-router, objc2-app-kit, objc2-foundation, SQLite, @tauri-apps/api, TanStack, appcompat, scrollable_positioned_list, video_player, highlight, cupertino_icons, hmac, keyring, local_auth, ort-sys, rmcp, ort, tokenizers, image, image_picker, flutter_svg, photo_manager, blurhash, mobile_scanner, mp4, pulldown-cmark, symphonia, webp, Pydantic, schemars, tracing, metrics, tracing-subscriber, k8s-openapi, metrics-exporter-prometheus, tracing-opentelemetry, kube, OpenTelemetry, opentelemetry-otlp, Tailwind CSS, class-variance-authority, @fontsource-variable/inter, @fontsource/jetbrains-mono, tailwind-merge, sonner, motion, tiptap, Radix UI, emoji-mart, alacritty_terminal, virtua, tauri-plugin-dialog, dnd-kit, react-diff-view, @tanstack/react-virtual, @tauri-apps/plugin-notification, embla-carousel-react, notify-rust, objc2-user-notifications, react-day-picker, tauri-plugin-notification, tauri-plugin-window-state, tiptap-markdown, webkit2gtk, window-vibrancy, Lucide, ed25519-dalek, earshot, MediaPipe, yaml, png, react-markdown, shiki, mdast-util-from-markdown, plist, qrcode, remark-breaks, remark-gfm, upng-js, Zod, tauri-apps
- Only in stalwart: deadpool-postgres, mysql_async, rdkafka, tokio-postgres, rocksdb, quick_cache, async-nats, r2d2, azure_storage_blob, Kafka, ldap3, argon2, azure_identity, hkdf, pbkdf2, pwhash, scrypt, totp-rs, jieba-rs, mail-parser, mail-builder, azure_core, sd-notify

## Side by side

| | buzz | stalwart |
|---|---|---|
| Size | 1,826,129 lines written, 3,453 code files | 637,196 lines written, 1,585 code files |
| Who writes it | 17.2% of its commits signed by AI. With Claude Code, Codex, Cursor, and Amp | 0% of its commits signed by AI |
| Activity | Last push November 6, 2026, 3,348 commits, 36,778 stars | Last push November 4, 2026, 1,836 commits, 15,779 stars |
| Tests | 1,760 test files. 44.8% of its code files have a test that imports them | 38 test files. 1.4% 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, buzz or stalwart?

buzz, with 1,826,129 lines written; stalwart has 637,196.

The proof: [block/buzz's code at commit 96af488](https://github.com/block/buzz/tree/96af488d968a1ae9d961c2132bea27822735f8da)

### Which has more GitHub stars, buzz or stalwart?

buzz, with 36,778 stars; stalwart has 15,779.

The proof: [block/buzz on GitHub](https://github.com/block/buzz)

### Which has more tests, buzz or stalwart?

buzz, with 1,760 test files; stalwart has 38.

The proof: [block/buzz's code at commit 96af488](https://github.com/block/buzz/tree/96af488d968a1ae9d961c2132bea27822735f8da)

### Which was updated more recently, buzz or stalwart?

buzz: its last push was on November 6, 2026, and stalwart's on November 4, 2026.

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

### Which has more commits signed by AI, buzz or stalwart?

buzz: an AI signed 17.2% of its commits, with Claude Code, Codex, Cursor, and Amp.

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

## Sources

- block/buzz: Read on November 6, 2026, at commit 96af488 (https://github.com/block/buzz/tree/96af488d968a1ae9d961c2132bea27822735f8da)
- stalwartlabs/stalwart: Read on November 7, 2026, at commit 8b32686 (https://github.com/stalwartlabs/stalwart/tree/8b32686532d34623e9ce8e1237cf2bed9554af38)

## 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.