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Dev tools · alternatives · 2026

24 alternatives to Anvil

Open-source AI coding agent with per-stage LLM routing

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 2 of them free or with a free tier.

  1. 1
    Anvil▲175

    Run a fleet of parallel Claude Codes

    Mar 2026 · anvil.fm · its alternatives →

  2. 2
    Axel▲271

    Todoist for AI coding agents

    Feb 2026 · axel.build · its alternatives →

  3. 3OS
  4. 4
    AgentSky▲430

    Any harness, any LLM — cloud-hosted agents on demand.

    Aug 2026 · agentsky.dev · its alternatives →

  5. 5
    AnySearch▲613

    Real-time structured search trusted by agents and developers

    Jul 2026 · anysearch.com · its alternatives →

  6. 6
    opencode▲393

    Your terminal's AI agent, with any model you want

    2025 · opencode.ai · its alternatives →

  7. 7

    Open-source pull requests AI agent

    2023 · qodo.ai · its alternatives →

  8. 8

    AI-powered chat & code review

    2024 · chromewebstore.google.com · its alternatives →

  9. 9
    Arch▲314

    Hey HN — I’m Adil from Katanemo (with Salman, Shuguang, and Meiyu) We previously shared an early version of this project as ArchGW. Based on customer feedback, the scope expanded from “LLM routing and model access” into something broader: delivery infrastructure for agentic applications. We renamed it to Plano and reworked the architecture accordingly. The problem On-the-ground AI practitioners will tell you that calling an LLM is not the hard part. The really hard part is delivering agentic applications to production quickly and reliably, then iterating without rewriting system code every…

    2024 · github.com · its alternatives →

  10. 10
    Helix▲132

    Your collaborative AI coding agent

    2025 · its alternatives →

  11. 11

    OpenAgents - The collaboration OS for AI agents. Contribute to openagents-org/openagents development by creating an account on GitHub.

    Apr 2026 · open-agents.dev · its alternatives →

  12. 12

    Build, customize, deploy – AI Agents your way with OAK

    2025 · saalt.ai · its alternatives →

  13. 13
    AGENTS.md▲229

    A README, but for your AI coding agent

    2025 · agents.md · its alternatives →

  14. 14
    Agenta▲362

    Open-source prompt management & evals for AI teams

    Nov 2025 · agenta.ai · its alternatives →

  15. 15

    Hey HN! Wanted to show our open source agent harness called Gambit. If you’re not familiar, agent harnesses are sort of like an operating system for an agent... they handle tool calling, planning, context window management, and don’t require as much developer orchestration. Normally you might see an agent orchestration framework pipeline like: compute -> compute -> compute -> LLM -> compute -> compute -> LLM we invert this so with an agent harness, it’s more like: LLM -> LLM -> LLM -> compute -> LLM -> LLM -> compute -> LLM Essentially you describe each agent in either a self contained…

    Jan 2026 · github.com · its alternatives →

  16. 16
    LLMWare▲358

    Dev tool to make AI apps to deploy privately or locally

    2024 · llmware.ai · its alternatives →

  17. 17

    Very excited to share Anvil. I built Anvil to take back control when working with parallel coding agents. It comes with one click worktree isolation, and first class spec support. Claude Code and similar coding TUIs are very eager to get into writing code, even before their human baby sitter fully understands the implication of what they are about to build. The core insight with Anvil is that it is much easier to write high quality code which matches the author's intent after iterating on an external plan with your agent. Align on the architecture, implementation, and verification strategy…

    Mar 2026 · github.com · its alternatives →

  18. 18
    Harness by Autonomousfree tier, from $149/mo▲291

    Every coding agent, every machine, one command center.

    7d ago · autonomous.ai · its alternatives →

  19. 19
    Kastrafree tier, from $19.99/mo▲332

    Hi HN, Fernando and I built Kastra. Kastra intercepts AI agent tool calls and evaluates them against deterministic policies before they execute. We built this product to control pre- and post-inference workloads. This is aimed at developers using coding agents like Claude Code, Codex, Cursor, and OpenClaw. Kastra pushes an allow, hold, and deny decision before the action runs. You can build these policies in plain English from the web app. The interception engine evaluates the tools, targets, and parameters of every action at sub 1ms at a scale of billions of interceptions per day. We also…

    Jul 2026 · kastra.ai · its alternatives →

  20. 20

    On-machine AI agent, automating engineering tasks seamlessly

    2025 · block.github.io · its alternatives →

  21. 21

    Deploy AI Agent, 60 seconds & $0 forever

    Aug 2026 · betterclaw.io · its alternatives →

  22. 22

    A powerful open model for agentic coding tasks

    2025 · qwenlm.github.io · its alternatives →

  23. 23

    I built Axe because I got tired of every AI tool trying to be a chatbot. Most frameworks want a long-lived session with a massive context window doing everything at once. That's expensive, slow, and fragile. Good software is small, focused, and composable... AI agents should be too. Axe treats LLM agents like Unix programs. Each agent is a TOML config with a focused job. Such as code reviewer, log analyzer, commit message writer. You can run them from the CLI, pipe data in, get results out. You can use pipes to chain them together. Or trigger from cron, git hooks, CI. What Axe is: - 12MB…

    Mar 2026 · github.com · its alternatives →

  24. 24

    Skip the setup and run OpenClaw & Hermes, fully managed

    Aug 2026 · cloudways.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →