Devtoolwatch BoardGet it every Monday

LangChain review

The agent engineering platform.

Updated Nov 1, 2026. Review written Nov 1, 2026 from the project's own sources; usage data refreshed every Monday.

LangChain at a glance

Category
Agent frameworks
Website
docs.langchain.com/langchain

Is LangChain growing? Usage data

In the week of Oct 25–31, 2026, LangChain ranked #318 on the Devtoolwatch Board and #33 in Agent frameworks, with a momentum score of 28 out of 100. Its main package had about 41.1M downloads that week, −1% against its own 4-week average.

New GitHub stars per week for LangChain12 weeks from Aug 9, 2026: 615, 570, 491, 504, 489, 502, 440, 322, 383, 563, 468, 472 new stars, an average of 485 a week.Aug 9week of Oct 25
New GitHub stars per week for the last 12 weeks, from GitHub's stargazer history (today's stargazers by the week they starred).
Show the weekly numbers
New GitHub stars per week for LangChain
Week ofNew stars
Aug 9, 2026615
Aug 16, 2026570
Aug 23, 2026491
Aug 30, 2026504
Sep 6, 2026489
Sep 13, 2026502
Sep 20, 2026440
Sep 27, 2026322
Oct 4, 2026383
Oct 11, 2026563
Oct 18, 2026468
Oct 25, 2026472

The Board ranks tools by four signals each week: new stars, new stars for the repo's size, added downloads and download growth beyond the market. How the ranking works.

LangChain alternatives

Other AI agent frameworks on the Board in the week of Oct 25–31, 2026, by momentum:

Agent frameworks ranked by momentum, the week of Oct 25–31, 2026
RankToolStarsDownloads/wk
#1Harness²Harness² is a Python framework from Google Research for recursive agent harnessing, refining an agent's prompts, tools, memory and…21.7k–
#2HyperFramesHyperFrames is an open-source framework that turns HTML, CSS, media, and seekable animations into deterministic MP4 videos, built for AI…76.6k1.5M
#3AgentScopeAgentScope is a Python agent framework with an SDK for building ReAct agents and an agent service backend with a web UI.35k51.4k
#4AG-UIAG-UI is an open, event-based protocol that standardizes how AI agents connect to user-facing frontend applications.16.9k4.6M
#5LangGraphLangGraph is a low-level orchestration framework and runtime for building, managing, and deploying long-running, stateful agents in…44.2k18.5M
#6BifrostOpen-source, high-performance AI gateway that works as your LLM gateway, MCP gateway and agent gateway. One OpenAI-compatible API for…9.3k–

All AI agent frameworks, ranked

LangChain FAQ

How popular is LangChain?

LangChain has 148.8k GitHub stars as of Nov 1, 2026. It gained 472 new stars in the week of Oct 25–31, 2026, against a 12-week average of 485 a week. Its main package had about 41.1M downloads that week, −1% against its own 4-week average. That made it #33 among AI agent frameworks on the Devtoolwatch Board.

What are the best alternatives to LangChain?

Other AI agent frameworks on the Devtoolwatch Board in the week of Oct 25–31, 2026, by momentum: Harness² (#1), HyperFrames (#2), AgentScope (#3), AG-UI (#4), LangGraph (#5). The alternatives table above has their numbers.

Sources

  1. Devtoolwatch Board, the week of Oct 25–31, 2026

LangChain README badge

Maintainers can show the tool's weekly Board rank in their README:

Devtoolwatch badge for LangChain

[![Devtoolwatch](https://index.devtoolwatch.com/badge/langchain.svg)](https://index.devtoolwatch.com/tools/langchain/)

How this page is made: Devtoolwatch writes each review from the project's README, releases, package metadata and website, with an AI model, then checks every claim against the source it cites and drops what the sources don't support. The numbers come from Devtoolwatch's daily GitHub snapshots, GitHub's stargazer history, and the npm and PyPI download APIs. Spotted an error? Email [email protected].