Source: https://seerepo.com/compare/ag-ui-protocol/ag-ui/vs/cline/cline
Markdown source: https://seerepo.com/compare/ag-ui-protocol/ag-ui/vs/cline/cline.md
Description: ag-ui and cline share 14 technologies: React, PostHog, MCP, Tailwind CSS, next-themes, class-variance-authority, tailwind-merge, Radix UI, embla-carousel-react, Lucide, streamdown, Zod, ai, and yaml. ag-ui is written in Python and cline in TypeScript.

# ag-ui vs cline

ag-ui and cline share 14 technologies: React, PostHog, MCP, Tailwind CSS, next-themes, class-variance-authority, tailwind-merge, Radix UI, embla-carousel-react, Lucide, streamdown, Zod, ai, and yaml. ag-ui is written in Python and cline in TypeScript.

- [ag-ui-protocol/ag-ui](https://seerepo.com/r/ag-ui-protocol/ag-ui): AG-UI: the Agent-User Interaction Protocol. Bring Agents into Frontend Applications.
- [cline/cline](https://seerepo.com/r/cline/cline): Autonomous coding agent as an SDK, IDE extension, or CLI assistant.

## What they share and what sets them apart

- In common: React, PostHog, MCP, Tailwind CSS, next-themes, class-variance-authority, tailwind-merge, Radix UI, embla-carousel-react, Lucide, streamdown, Zod, ai, yaml
- Only in ag-ui: ASP.NET Core, FastAPI, Spring, activity-compose, AIOHTTP, core-ktx, java-server, Tokio, uvicorn, Next.js, Express, Hono, @mastra/libsql, go, Microsoft.Extensions.AI.Abstractions, openai-agents, spring-ai-bom, spring-ai-client-chat, strands-agents, Microsoft.Extensions.AI, google-adk, ag-ui-a2ui-toolkit, CrewAI, google-antigravity, LangChain, LangGraph, litellm, langroid, coil-compose, Pydantic, io.ktor:ktor-client-logging, slf4j-simple, github.com/sirupsen/logrus, log, @a2ui/web_core, @copilotkit/react-ui, @monaco-editor/react, tiptap, @phosphor-icons/react, copilotkit, mastra, @a2a-js/sdk, @langchain/openai, markdown-it, zod-to-json-schema, @cfworker/json-schema, @strands-agents/sdk, @omnara/sdk, @copilotkit/runtime, Ajv
- Only in cline: Vite, SQLite, Anthropic, OpenAI, OpenTUI, @clack/prompts, chat, @agentclientprotocol/sdk, pino, @shikijs/themes, Base UI, xyflow, sonner, ansi-to-react, cmdk, media-chrome, motion, react-jsx-parser, recharts, use-stick-to-bottom, tokenlens, shiki, jwt-decode, Cheerio, exceljs, js-yaml, mammoth, pdf-parse, turndown, opentelemetry, styled-components, HeroUI, react-virtuoso, Mermaid, react-textarea-autosize, dompurify, react-markdown, rehype-highlight, unist-util-visit, marked, rehype-parse, remark-gfm, remark-stringify, unified, skills, ai-sdk, @opentelemetry/sdk-trace-node, langfuse

## Side by side

| | ag-ui | cline |
|---|---|---|
| Size | 879,462 lines written, 1,084 code files | 888,033 lines written, 2,295 code files |
| Who writes it | 22.7% of its commits signed by AI. With Claude Code, Codex, GitHub Copilot, and Cursor | 2.2% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and Codex |
| Activity | Last push November 6, 2026, 3,939 commits, 17,052 stars | Last push November 5, 2026, 7,646 commits, 71,315 stars |
| Tests | 1,756 test files. 60.9% of its code files have a test that imports them | 1,079 test files. 46.8% 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, ag-ui or cline?

cline, with 888,033 lines written; ag-ui has 879,462.

The proof: [cline/cline's code at commit d3ecc48](https://github.com/cline/cline/tree/d3ecc4890e8f9bcb77182b96c77fa90575e8e145)

### Which has more GitHub stars, ag-ui or cline?

cline, with 71,315 stars; ag-ui has 17,052.

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

### Which has more tests, ag-ui or cline?

ag-ui, with 1,756 test files; cline has 1,079.

The proof: [ag-ui-protocol/ag-ui's code at commit 37b4da9](https://github.com/ag-ui-protocol/ag-ui/tree/37b4da90c8dfba2b7ef2182c738fda5350f0fc60)

### Which was updated more recently, ag-ui or cline?

ag-ui: its last push was on November 6, 2026, and cline's on November 5, 2026.

The proof: [ag-ui-protocol/ag-ui's commits on GitHub](https://github.com/ag-ui-protocol/ag-ui/commits)

### Which has more commits signed by AI, ag-ui or cline?

ag-ui: an AI signed 22.7% of its commits, with Claude Code, Codex, GitHub Copilot, and Cursor; in cline, 2.2%.

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

## Sources

- ag-ui-protocol/ag-ui: Read on November 7, 2026, at commit 37b4da9 (https://github.com/ag-ui-protocol/ag-ui/tree/37b4da90c8dfba2b7ef2182c738fda5350f0fc60)
- cline/cline: Read on November 5, 2026, at commit d3ecc48 (https://github.com/cline/cline/tree/d3ecc4890e8f9bcb77182b96c77fa90575e8e145)

## 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.