Best ai agents for developer tools.
39 ai agents in Developer tools. The top 17 are ranked by public GitHub stars, collected October 5, 2026; the rest are listed below them. Coding agents, IDE integrations, repositories, CI and the tooling that surrounds them.
| # | Listing | Category | Stars | Forks | Last push |
|---|---|---|---|---|---|
| 1 | OpenHands Open source platform for software development agents that can run tools and MCP servers. | Developer tools | 90k | 11.9k | Oct 5, 2026 |
| 2 | Aider Terminal AI pair-programming tool that maps a codebase, edits files across many languages, commits to git, and lints and tests automatically with many LLMs. | Developer tools | 49.4k | 5k | May 22, 2026 |
| 3 | LangGraph LangChain framework and platform for building stateful, long-running agents with MCP tool adapters. | Developer tools | 42.7k | 7.3k | Oct 4, 2026 |
| 4 | CopilotKit Agentic frontend stack connecting agents to user-facing apps with generative UI, frontend tools, human-in-the-loop approvals and shared state; supports AG-UI and MCP Apps. | Developer tools | 37.8k | 4.7k | Oct 5, 2026 |
| 5 | Langfuse Open-source engineering platform for agent evaluation and observability with hierarchical traces of LLM, tool and retrieval steps, agent graphs and an MCP server. | Developer tools | 35.4k | 3.9k | Oct 4, 2026 |
| 6 | Semantic Kernel Microsoft SDK for agents and plugins in .NET, Python and Java with MCP support. | Developer tools | 28.6k | 4.8k | Oct 1, 2026 |
| 7 | FastMCP Python framework for building MCP servers and clients quickly. | Developer tools | 28k | 2.4k | Oct 4, 2026 |
| 8 | Vercel AI SDK TypeScript toolkit for AI applications and agents with MCP client support. | Developer tools | 27.1k | 5.3k | Oct 5, 2026 |
| 9 | Letta Platform for stateful agents with long-term memory, formerly MemGPT. | Developer tools | 25k | 2.6k | Sep 10, 2026 |
| 10 | Opik Open-source observability and evaluation platform with full trace trees for multi-step agents and tool calls, LLM-as-judge metrics and an opik-mcp server. | Developer tools | 22.4k | 1.8k | Oct 5, 2026 |
| 11 | Google Agent Development Kit Google framework for building and deploying agents with tools, evaluation and MCP support. | Developer tools | 21.7k | 4.1k | Oct 4, 2026 |
| 12 | Plandex Terminal-based coding agent that plans and executes large multi-step tasks across many files, loading context, running commands and debugging autonomously. | Developer tools | 15.7k | 1.2k | Oct 3, 2025 |
| 13 | Eino Go framework for LLM applications with ChatModelAgent (tool use, ReAct), DeepAgent for multi-step tasks with sub-agents, and interrupt/resume for human-in-the-loop. | Developer tools | 13.2k | 1.1k | Sep 29, 2026 |
| 14 | assistant-ui React primitives for agent chat interfaces with streaming tool calls, branching and generative UI, plus runtime adapters and MCP integration including MCP Apps. | Developer tools | 12.4k | 1.2k | Oct 5, 2026 |
| 15 | Arize Phoenix Open-source observability and evaluation platform for agent development with step-level tracing, LLM-as-judge evals, datasets from traces and experiments. | Developer tools | 11.7k | 1.2k | Oct 4, 2026 |
| 16 | mcp-use Open source library for connecting any LLM to MCP servers and building MCP agents. | Developer tools | 10.7k | 1.5k | Oct 2, 2026 |
| 17 | LangWatch LLM engineering platform for simulation-based agent testing, LLM-as-judge evals and OpenTelemetry trace observability, tracing and mocking tool and MCP calls. | Developer tools | 4.9k | 407 | Oct 4, 2026 |
More ai agents for developer tools 22
Listed without a public GitHub repository, or not yet collected.
Bits AI
Datadog's suite of agents for SRE, developer and security work, including autonomous investigation, code fixes, alert triage and an agent builder, with an MCP server.
bolt.new
StackBlitz agent that builds and runs full-stack applications in the browser from prompts.
Braintrust
Observability and evaluation platform for agents that traces production behavior, scores quality with automated and human evals, and runs dataset experiments; offers MCP.
CodeRabbit
AI code review platform that reviews and ranks pull requests, loops with coding agents to address feedback, learns team preferences and runs pre-merge checks.
Devin
Cognition software engineering agent that works on tasks in its own cloud workspace.
Docker MCP Catalog and Toolkit
Docker Desktop catalog and toolkit for discovering and running containerised MCP servers.
Emergent
Platform whose agents design, code and deploy web and mobile applications from natural-language descriptions, including builders for dashboards and custom agents.
Galileo
Observability and evaluation platform to evaluate, monitor and protect agents with agent evals, failure-mode analysis, custom evaluators and an MCP server.
Glama
MCP server directory and gateway with hosted access for AI clients.
Greptile
Code review platform that indexes a codebase graph and runs parallel review agents on pull requests, including a test-writing agent, with a Greptile MCP.
Jules
Autonomous coding agent that clones a GitHub repository, plans with Gemini models, produces diffs for review and submits pull requests for bug fixes and features.
Lovable
AI app builder that turns prompts into full-stack web applications.
Lunary
Platform for monitoring and debugging agents in production with agent tracing, error detection, log search and dashboards for usage, cost and satisfaction.
Momentic
AI testing platform whose agents write, run, heal and triage end-to-end web and mobile tests, with Momentic MCP servers for browser and mobile session control.
Ona
Cloud platform running background software-engineering agents that take a task and return a pull request for fixes, migrations, CVE remediation and reviews.
Qodo
Code review and governance platform whose specialized review agents reason across repositories to flag bugs and standard violations and guide developer agents.
Replit Agent
Agent inside Replit that builds, deploys and iterates on applications from natural language.
Resolve AI
Autonomous agents for on-call and production operations that triage alerts, investigate incidents and run operational workflows, integrating via MCP, API and skills.
Sentry Seer
AI debugging agent that investigates issues from production telemetry to find root causes and propose fixes, usable alongside Sentry MCP in coding tools.
Smithery
Registry and hosting platform for MCP servers with a hosted gateway for agents.
TestSprite
Testing agent that generates and runs end-to-end tests against live apps so coding agents can verify changes, available via CLI, CI/CD and an MCP server.
W&B Weave
Observability and evaluation for production agents with session- and turn-aware tracing and evals; coding agents connect through W&B skills and an MCP server.
Questions and answers
What is the most-starred ai agent for developer tools?
OpenHands, with 89,996 public GitHub stars as of October 5, 2026. Open source platform for software development agents that can run tools and MCP servers.
How many ai agents for developer tools are listed?
39 on RUAGENTIC, 17 of them ranked by stars and 22 listed without a public GitHub repository or without collected metrics.
How is this list ranked?
By public GitHub star count, read hourly from the repository each listing links to, last collected October 5, 2026. Stars measure attention on GitHub, not quality or safety. Listings that share one repository appear once. Sponsorship never changes a rank.
See every ai agent at /ai-agents, the full ai agents leaderboard for developer tools, or list your project.