Source: https://seerepo.com/compare/langchain-ai/langchainjs/vs/RocketChat/Rocket.Chat
Markdown source: https://seerepo.com/compare/langchain-ai/langchainjs/vs/RocketChat/Rocket.Chat.md
Description: langchainjs and Rocket.Chat share 8 technologies: Express, Hono, bson, Zod, Cheerio, @hono/node-server, aws-sdk, and jose. Both are written in TypeScript.

# langchainjs vs Rocket.Chat

langchainjs and Rocket.Chat share 8 technologies: Express, Hono, bson, Zod, Cheerio, @hono/node-server, aws-sdk, and jose. Both are written in TypeScript.

- [langchain-ai/langchainjs](https://seerepo.com/r/langchain-ai/langchainjs): The agent engineering platform
- [RocketChat/Rocket.Chat](https://seerepo.com/r/RocketChat/Rocket.Chat): The Secure CommsOS™ for mission-critical operations

## What they share and what sets them apart

- In common: Express, Hono, bson, Zod, Cheerio, @hono/node-server, aws-sdk, jose
- Only in langchainjs: MCP, @pinecone-database/pinecone, weaviate-client, prompts, validate-npm-package-name, TypeORM, langsmith, handlebars, js-yaml, yaml, js-tiktoken, mustache, @cfworker/json-schema, @standard-schema/spec, @langchain/langgraph, langchain, @aws-sdk/credential-provider-node, @aws-sdk/types, cohere-ai, groq-sdk, ollama, @azure/identity
- Only in Rocket.Chat: React, Vite, MongoDB, ldapjs, Google Cloud, localforage, AWS S3, connect, @slack/bolt, react-router-dom, polka, Preact, history, GitHub, LiveKit, stylis, React Hook Form, react-virtuoso, react-aria, Chart.js, virtua, nivo, react-error-boundary, codemirror, swagger-ui-express, Swiper, emojibase-data, Passport, bcrypt, @node-oauth/oauth2-server, express-session, passport-apple, passport-github2, passport-google-oauth20, dompurify, sharp, @xmldom/xmldom, mailparser, nodemailer, csv-parse, file-type, highlight.js, @react-pdf/renderer, he, is-svg, json-2-csv, juice, marked, sanitize-html, Ajv, cron-validator, prom-client, @bugsnag/js, pino, reactflow, @hello-pangea/dnd, @lezer/highlight, react-split-pane, typia, css-mediaquery, style-dictionary, react-stately, katex, emoji-mart, mdast-util-to-string, remark-parse, remark-stringify, unified, ajv-formats, opentelemetry, overlayscrollbars-react, overlayscrollbars, re-resizable, @react-aria/focus

## Side by side

| | langchainjs | Rocket.Chat |
|---|---|---|
| Size | 446,312 lines written, 1,388 code files | 937,658 lines written, 8,385 code files |
| Who writes it | 0.6% of its commits signed by AI. With Claude Code, Cursor, and GitHub Copilot | 0.9% of its commits signed by AI. With Claude Code, GitHub Copilot, CodeRabbit, Cursor, and Devin |
| Activity | Last push November 6, 2026, 7,382 commits, 18,327 stars | Last push November 6, 2026, 25,061 commits, 46,374 stars |
| Tests | 761 test files. 37.1% of its code files have a test that imports them | 2,056 test files. 17% 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, langchainjs or Rocket.Chat?

Rocket.Chat, with 937,658 lines written; langchainjs has 446,312.

The proof: [RocketChat/Rocket.Chat's code at commit 70825b1](https://github.com/RocketChat/Rocket.Chat/tree/70825b185fb65335383ad3e491be29883047174d)

### Which has more GitHub stars, langchainjs or Rocket.Chat?

Rocket.Chat, with 46,374 stars; langchainjs has 18,327.

The proof: [RocketChat/Rocket.Chat on GitHub](https://github.com/RocketChat/Rocket.Chat)

### Which has more tests, langchainjs or Rocket.Chat?

Rocket.Chat, with 2,056 test files; langchainjs has 761.

The proof: [RocketChat/Rocket.Chat's code at commit 70825b1](https://github.com/RocketChat/Rocket.Chat/tree/70825b185fb65335383ad3e491be29883047174d)

### Which was updated more recently, langchainjs or Rocket.Chat?

Both got their last push on November 6, 2026.

The proof: [langchain-ai/langchainjs's commits on GitHub](https://github.com/langchain-ai/langchainjs/commits)

### Which has more commits signed by AI, langchainjs or Rocket.Chat?

Rocket.Chat: an AI signed 0.9% of its commits, with Claude Code, GitHub Copilot, CodeRabbit, Cursor, and Devin; in langchainjs, 0.6%.

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

## Sources

- langchain-ai/langchainjs: Read on November 6, 2026, at commit 8103487 (https://github.com/langchain-ai/langchainjs/tree/8103487c55784c5befd84c1bc803546f720f806e)
- RocketChat/Rocket.Chat: Read on November 6, 2026, at commit 70825b1 (https://github.com/RocketChat/Rocket.Chat/tree/70825b185fb65335383ad3e491be29883047174d)

## 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.