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LangChain logo

LangChain

RAG Frameworks

Verified Publisher·Pending reviewVerified Adoption·Pending reviewEnterprise Ready·Pending review

Framework for composing agents, RAG workflows, retrieval, and tool calls.

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Developers also use

Generated from similarity, co-save, category, project, and adoption signals.

LangChain4j logo
LangChain4j

RAG Frameworks· docs.langchain4j.dev

Open source

Java framework for integrating LLMs, RAG pipelines, tools, and agent workflows into JVM applications.

Why recommended

Highly similar description

Keep evaluating LangChain

Comparisons, category adoption data, and shortlist guides that answer the questions this profile raises next.

Weigh LangChain against the alternatives

  • LangChain alternativesEvery rag frameworks product developers evaluate in place of LangChain.
  • LangChain vs LangChain4jSide-by-side pricing, API surface, and adoption evidence.
  • LangChain vs LlamaIndexSide-by-side pricing, API surface, and adoption evidence.
  • LangChain vs HaystackSide-by-side pricing, API surface, and adoption evidence.

Developer decision brief

Should I use LangChain?

Framework for composing agents, RAG workflows, retrieval, and tool calls.

Open sourceDocs linked

Best for

  • RAG Frameworks decisions where you need a concrete shortlist.
  • Teams that prefer open-source or self-hostable options.
  • Builds that need an API-first integration path.

Watch-outs

  • Not enough verified adoption data yet.
  • Docs linked on this profile.
  • Repository linked for inspection.
  • No developer reviews yet.

Quickstart

No canonical install command detected. Open the docs or profile quickstart below.

Use quickstart hereDocsGitHubWebsite

Compare alternatives

LangChain vs LangChain4jLangChain vs LlamaIndexLangChain vs Haystack
Build with this

What you would get weekly

Save or follow LangChain to track rank movement, new alternatives, starter examples, benchmark/docs changes, and project activity. Default cadence is weekly.

No live product opportunities yet

You can still use the workbench: build a stack, publish proof, and follow starter challenge programs. New credits, workshops, and launch programs appear here once companies publish them.

Enterprise fit

Buyer brief for procurement and architecture review

Source-labeled signals for cost, reliability, security, integration, and adoption proof. Missing compliance evidence is shown as a gap, not guessed.

Compare for enterpriseExport brief
Inferred

Commercial model

Open source profile signal; exact enterprise terms need buyer review.

View source
Needs verification

Reliability

No status page, uptime, or SLA evidence attached

Buyer recommendation

Shortlist only after verifying Reliability and Security/compliance.

API signal supports workflow automation.Docs are linked for implementation review.Open-source path can reduce lock-in review.At least one buyer evidence source is linked or verified.

Real data backfill while adoption proof grows

These are source-linked enrichment paths for missing fields. They are treated as proxies until claimed-company data and first-party tokens& adoption events replace them.

GitHub repository APIfreeStars, forks, license, topics, releases, default branch, repo freshness, and public contributor signal.OpenSSF ScorecardfreeOpen-source security posture checks for repos before enterprise review.Wikidata company graph

Events / Tours

LangChain developer events

Hackathons, workshops, office hours, launches, and partner challenges tied to this product.

Claim or partner

No public events yet

Claimed teams can add hackathons, webinars, office hours, and challenges, then measure attendee to usage ROI.

Quickstart

Preparing LangChain docs pack
Streaming

The product profile is ready. Official docs, README snippets, and the AI paste pack are loading in the background.

Build context

Developer projects using LangChain

Publish your build
MongoDB Atlas logo
Anonymous builderabout 6 hours ago
Recall — persistent agent memory on Atlas Vector Search

Built for the MongoDB Harness Engineering & Model Wrangling Hackathon (NYC, Sep 26 2026). Recall stores conversation episodes as embeddings in Atlas Vector Search, keeps a compact semantic profile per user, and replays memory into the agent prompt with a budget. A drift evaluator re-scores memories weekly and prunes stale ones. Stack: Next.js app router, Vercel, MongoDB Atlas (Vector Search + Atlas Search), LangChain, OpenAI embeddings.

Built with

MongoDB Atlas logoMongoDB AtlasMongoDB Atlas is the multi-cloud developer data platform: document database, Atlas Vector Search for RAG and agent memory, Atlas Search, and Stream Processing, with a free tier and serverless options.LLangChainFramework for composing agents, RAG workflows, retrieval, and tool calls.Next.js logoNext.jsReact framework for production web apps, dashboards, and SaaS products.Vercel logoVercelFrontend cloud with preview deployments, serverless functions, and Next.js hosting.+1
0 0 0Open
MongoDB Atlas logo
Anonymous builderabout 14 hours ago
Recall — persistent agent memory on Atlas Vector Search

Built for the MongoDB Harness Engineering & Model Wrangling Hackathon (NYC, Sep 26 2026). Recall stores conversation episodes as embeddings in Atlas Vector Search, keeps a compact semantic profile per user, and replays memory into the agent prompt with a budget. A drift evaluator re-scores memories weekly and prunes stale ones. Stack: Next.js app router, Vercel, MongoDB Atlas (Vector Search + Atlas Search), LangChain, OpenAI embeddings.

Built with

MongoDB Atlas logoMongoDB AtlasMongoDB Atlas is the multi-cloud developer data platform: document database, Atlas Vector Search for RAG and agent memory, Atlas Search, and Stream Processing, with a free tier and serverless options.
L
Anonymous builder2 months ago
Chat LangChain

Public-source project proof for Chat LangChain. The project demonstrates a documentation assistant agent, a public chat surface, LangChain agent patterns, and a Next.js frontend. Curated as public source evidence, not an ownership claim.

Built with

LLangChainFramework for composing agents, RAG workflows, retrieval, and tool calls.Next.js logoNext.jsReact framework for production web apps, dashboards, and SaaS products.Vercel logo
L
Anonymous builder2 months ago
Flowise

Public-source project proof for Flowise. The repo and public site show a visual AI agent and LLM workflow builder with LangChain and OpenAI ecosystem signals. Curated as public source evidence, not an ownership claim.

Built with

LLangChainFramework for composing agents, RAG workflows, retrieval, and tool calls.OpenAI API logoOpenAI APIModel APIs for assistants, embeddings, retrieval, and production AI apps.
0
OpenAI API logo
Anonymous builder2 months ago
GPT Researcher

Public-source project proof for GPT Researcher. The project ships an autonomous research workflow with repo evidence, docs, MCP-oriented extension points, and a public product site. Curated as public source evidence, not an ownership claim.

Built with

OpenAI API logoOpenAI APIModel APIs for assistants, embeddings, retrieval, and production AI apps.LLangChainFramework for composing agents, RAG workflows, retrieval, and tool calls.

Public credibility status

Claimable

This profile now separates verified proof from self-reported claims, so founders can improve status without buying rank.

Profile strength

31/100

Weak public profile · 7 gaps

Verified Publisher

Verify ownership through DNS or well-known file.

Verified Adoption

Connect SDK/API events to prove adoption.

Team Verified

Add founder/team proof.

GitHub

Repository linked

Docs

Docs linked

Security

Add SOC2/security/compliance proof.

Backers

Add verified backer proof.

Protocol/API

Agent-readable proof present

Freshness

Awaiting fresh proof.

Built by
L

LangChain team

Founding team

OSS MaintainerProtocol Ready
Proof file
ProofStateEvidence

Publisher ownership

Domain or organization claim · Live

Pending reviewUnclaimed profile45% confidence

Verified adoption

SDK/API/CRM telemetry · Pending

AgentRank trust profile

Public proof buyers and agents can trust

Claim this tool to see who is evaluating it

AgentRank

16

Adoption + trust composite

Trust Score

36

observed

Category Rank

Not ranked yet

RAG Frameworks

Protocols

API, SDK

Agent-readable metadata

Trust Registry

AgentRank evidence file
observed

Source breakdown

Public sources are pending.

Protocol support

APISDK
Adoption over time
Last 8 weeksSmall cohort suppressed · trust 36

Timeline appears after verified events.

We do not draw a fake adoption chart before live usage, self-reported proof, or challenge activity exists for this product.

Suppressed

active developers

Unavailable

verified adoptions

Suppressed

retention

Your developer adoption profile is already visible.

Claim it to verify data, add integrations, and unlock adoption intelligence on developers and accounts evaluating LangChain.

Claim your tool

Developer identities

See the builders behind saves, docs clicks, API calls, and retained usage.

Talk to sales

Account map

Resolve developer activity into companies, teams, and enterprise accounts.

Developer identities, account mapping, retention cohorts, and competitor overlap are available on Growth and Enterprise plans.

About LangChain

Framework for composing agents, RAG workflows, retrieval, and tool calls.

Workspace actions

Sign up to save, follow, compare, publish builds, or verify ownership.

Public links
Visit WebsiteDocumentationGitHubView Alternatives
Quick Info
PricingOpen source
Open sourceYes
API availableYes
Add to Your Project
[![LangChain on Adoption Intelligence](https://tokensand.com/api/badges/langchain)](https://tokensand.com/tools/rag-frameworks/langchain)
LangChain badge previewPreview

Add this badge to your README.md to show your listing on Adoption Intelligence.

12,442
2,325
Open source
Why recommended

Highly similar description

LlamaIndex logo
LlamaIndex

RAG Frameworks· llamaindex.ai

Open source

Data framework for document ingestion, retrieval, and RAG over private data.

Why recommended

Same category

Open source
Why recommended

Same category

Haystack logo
Haystack

RAG Frameworks· haystack.deepset.ai

Open source

Open-source framework for production LLM applications, RAG pipelines, search, and agentic workflows.

Why recommended

Highly similar description

25,642
2,877
Open source
Why recommended

Highly similar description

RAGFlow logo
RAGFlow

RAG Frameworks· ragflow.io

Open source

RAGFlow is an open-source RAG engine with document understanding, hybrid search, and agent orchestration for building production retrieval workflows over complex files.

Why recommended

Same category

84,233
9,796
Open source
Why recommended

Same category

  • LangChain vs RAGFlowSide-by-side pricing, API surface, and adoption evidence.

    • Check the adoption evidence

    • RAG Frameworks developers actually keep usingFiltered to products with verified usage events, cohort breadth, and retention.
    • AgentRank category rankingsHow every category is ordered by adoption proof, trust, and protocol support.
    • Best AI Tools for RAGShortlist guide for this category, with the tradeoffs written out.
    • Best Open Source AI ToolsShortlist guide for this category, with the tradeoffs written out.

    Own LangChain? Generate its adoption badge embed, or claim the profile to send verified usage events.

    Needs verification

    Security/compliance

    No security, trust, or compliance source attached

    Source linked

    Integration fit

    API available with docs/profile signal

    View source
    Verified

    Adoption proof

    5 verified adoption signals

    Vendor value loop

    Vendors receive anonymous aggregate evaluation demand by default. Account details are shared only after explicit buyer contact or consent.

    Request vendor contact
    free
    Parent company, acquisition, and ownership hints to avoid misleading same-owner comparisons.
    LLangChainFramework for composing agents, RAG workflows, retrieval, and tool calls.
    Next.js logoNext.jsReact framework for production web apps, dashboards, and SaaS products.
    Vercel logoVercelFrontend cloud with preview deployments, serverless functions, and Next.js hosting.
    +1
    0 0 0Open
    Vercel
    Frontend cloud with preview deployments, serverless functions, and Next.js hosting.
    0 0 1Open
    0
    1
    Open
    GitHub MCP Server logoGitHub MCP ServerOfficial GitHub MCP server that lets AI agents read repositories, manage issues and pull requests, and automate GitHub workflows.
    0 0 1Open
    Pending review
    GitHubWebsite

    Team proof is pending until the product profile is claimed.

    OSS MaintainerProtocol Ready
    Owner checklist

    Verified domain

    +15

    Verify publisher ownership to remove the unclaimed status gap.

    Logo, tagline, category, description

    +10

    Polish logo and description so buyers understand the product quickly.

    SDK/API telemetry connected

    +20

    Connect SDK to unlock Verified Adoption.

    Verified adoption badge

    +10

    Send enough verified adoption events to pass the cohort threshold.

    Improve profile
    Pending review
    Insufficient cohort50% confidence

    Category rank

    AgentRank methodology · Pending

    		Pending reviewRank pending40% confidence

    Team proof

    Domain, social, and team evidence · Live

    		LockedTeam not added45% confidence

    Security and enterprise readiness

    Docs, compliance, protocol, and readiness signals · Pending

    		Pending reviewSecurity proof pending38% confidence
    Share and embed

    Public profile card

    Share the product's rank, trust state, and top badges.

    Open

    Verified Adoption badge

    README and website badge backed by telemetry.

    Open
    [![Verified Adoption](/api/badges/langchain?variant=verified)](https://tokensand.com/tools/rag-frameworks/langchain)

    Top 10 badge

    Unlocks automatically when the profile enters Top 10.

    Open
    [![Top 10](/api/badges/langchain?variant=top10)](https://tokensand.com/tools/rag-frameworks/langchain)

    Team launch card

    Founder/team credibility card for launch posts and investor updates.

    Open

    Weekly momentum card

    Share rank movement and verified adoption growth.

    EnterpriseOpen
    Launch copy

    LangChain is live as a public adoption profile: https://tokensand.com/tools/rag-frameworks/langchain. Verified proof beats vanity metrics.

    Embed path: /api/badges/langchain?variant=verified · Profile: /tools/rag-frameworks/langchain

    Tracked Developers

    0

    Known active developer activity

    Profile Status

    Unclaimed

    Owner action needed

    Agent-readable protocol evidence raises trust and commercial readiness.

    Benchmark proof

    Benchmark proof pending

    Attach latency, cost, accuracy, reliability, or eval evidence to unlock the performance component.

    Trust gaps

    Verify publisher ownership
    Send SDK/API telemetry
    Attach benchmark evidence

    Enterprise verification can enrich evidence and export proof packages, but cannot buy rank.

    Claim this tool to see who is evaluating it
    Next best action

    Claim LangChain before competitors use this profile as proof.

    Connect usage events, resolve developer identities, and see which accounts are evaluating LangChain.

    Claim this tool to see who is evaluating it
    Talk to sales

    Retention cohorts

    Track first API call through 7/30/90-day retention and expansion.

    Talk to sales

    Competitor overlap

    Find developers evaluating alternatives and switching between tools.

    Talk to sales

    Category benchmark

    Compare activation, retention, and growth against your market.

    Talk to sales

    Recommended actions

    Prioritized DevRel, product, and sales plays based on live adoption signals.

    Talk to sales
    Ship with LangChain in 60 seconds
    Hackathon-readyPython

    Auto-detected from official docs

    uv
    uv add langchain
    Docs:Official DocsGitHubWebsite