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AI · alternatives · 2026

24 alternatives to Groundrules

Assemble the ground rules your AI coding agents follow

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Build AI agents that respond with UI instead of text

    Feb 2026 · thesys.dev · its alternatives →

  2. 2
    Straion▲376

    Hi HN — we’re building Straion (founders are ex‑Netlify, ex‑Elastic, ex‑Dynatrace). Core idea: static AGENTS.md / CLAUDE.md files are useful, but they often become too broad for real tasks. Instead of injecting all guidance every time, Straion selects the relevant rules per task and keeps context narrow. How it works today: 1. You define org/team/project rules centrally 2. A CLI skill calls our pipeline during agent workflows 3. Straion returns only the rules relevant to the current task 4. The agent gets focused context instead of a giant rules dump This reduces context bloat…

    Feb 2026 · straion.com · its alternatives →

  3. 3
    Replicas▲239

    Hey HN! I'm Connor, creator of Replicas. I'm a heavy Codex/Claude Code user, and I wanted to hand off tasks to agents like I would to an engineer - kick something off before work, let it scaffold while I'm at lunch, even come back to a ready PR. The problem: existing alternatives use workspace VMs that are black boxes. I have no access to any of them - they can't run tests, read logs, or use tools like the Playwright MCP (which I use to verify agents actually fixed what they claim to fix). Replicas gives agents real cloud workspaces where they can: - Run your test suite and read the…

    Jun 2026 · replicas.dev · its alternatives →

  4. 4
    Skillkit▲252

    It's an open-source project that lets you create, translate, and work with multiple agents at the same time, and more.

    Feb 2026 · agenstskills.com · its alternatives →

  5. 5
    Viberia▲146

    Hey HN, This is my take on the agent harness. Everything on an isometric map. Agents are grouped into "buildings" that run in a sequence or a loop; e.g., the CodeForge has an agent that writes a PRD, another one that implements, and a third that reviews. Everything is customizable, you build your own buildings/teams however you want. It's a Tauri app, really light (about 8x less energy than the closest competitor I benchmarked, so it actually runs from a coffee shop on battery). It's macOS only for now, but ping me if you are willing to test the Windows or Linux version. I've been…

    May 2026 · getviberia.com · its alternatives →

  6. 6
    Contral▲154

    Contral is the IDE that teaches while you build — and the extension that drops the same teaching layer onto Cursor, Copilot, Claude Code, Codex, Cline, Kilo Code, Windsurf, Antigravity. Vibecode at full speed and actually understand every line that ships. Recursive coding agent built in.

    Mar 2026 · contral.ai · its alternatives →

  7. 7AP

    One memory, not one per tool. Cog gives AI agents a shared, structured memory layer using plain-text files — portable across Claude Code, Codex, Cursor, Gemini CLI, Windsurf, Copilot, and more.

    Mar 2026 · lab.puga.com.br · its alternatives →

  8. 8

    Hi HN, I’m Michael, I built AgentGrid with my friend Souren because we were tired of losing our coding sessions and couldn't keep track of what was actually being built across our many projects. Our approach was to use an infinite canvas desktop app for the TUIs we already know and love, mainly claude + codex. We drew inspiration from Figma and Railway. Overtime we added image nodes, notes, terminals, coding editors, source control, etc. I wasn't sure about it at first. It took me a month to give the first version Souren built a real try. What got me was an Apple System Update I've been…

    Jul 2026 · agentgrid.sh · its alternatives →

  9. 9
    Doing▲135

    Voice and visual context for AI builders. No subscription.

    Apr 2026 · doing.tools · its alternatives →

  10. 10
    Compyle▲125

    Hey HN! I'm Jonathan, one of the co-founders of <>> Compyle. We're building a coding agent that isn't afraid to stop and ask questions! It checks in with you before it makes key product and engineering decisions, so you can trust it with more open-ended tasks than you can with other coding agents. Before Compyle, we were building SmartAppetite (AI agents for insurance). Using tools like Claude Code &#x2F; Cursor, we had a demo in days - then spent weeks cleaning up a codebase we no longer fully understood. We had to pause feature development just to refactor. That pain is why we built…

    Nov 2025 · compyle.ai · its alternatives →

  11. 11

    Hey HN, We're Cosmic (YC W19), a headless CMS. Today we're launching Team Agents and the Cosmic Agent. Team Agents are AI-powered team members that live in Slack, WhatsApp, and Telegram. They have names, roles, persistent memory, and real capabilities. Not chatbots. Not one-off prompts. Persistent agents that work alongside your team. Here's what they can do: CONTENT AGENTS write blog posts, landing pages, and marketing copy. They generate images, add SEO metadata, and publish directly to the CMS. Message them in Slack, get a finished post back. CODE AGENTS read your codebase, create…

    Dec 2025 · cosmicjs.com · its alternatives →

  12. 12
    agentcad▲110

    A CAD design tool for coding agents (free + open source)

    Jun 2026 · agentcad.dev · its alternatives →

  13. 13

    This project (Agents Observe) started as an exploration into building automation harnesses around claude code. I needed a way to see exactly what teams of agents were doing in realtime and to filter and search their output. A few interesting learnings from building and using this: - Claude code hooks are blocking - performance degrades rapidly if you have a lot of plugins that use hooks - Hooks provide a lot more useful info than OTEL data - Claude's jsonl files provide the full picture - Lifecycle management of MCP processes started by plugins is a bit kludgy at best The biggest takeaway is…

    Apr 2026 · github.com · its alternatives →

  14. 14

    Production-tested architecture for autonomous Claude agents

    Apr 2026 · dvdshn.com · its alternatives →

  15. 15

    Single-agent LLMs suck at long-running complex tasks. We’ve open-sourced a multi-agent orchestrator that we’ve been using to handle long-running LLM tasks. We found that single LLM agents tend to stall, loop, or generate non-compiling code, so we built a harness for agents to coordinate over shared context while work is in progress. How it works: 1. Orchestrator agent that manages task decomposition 2. Sub-agents for parallel work 3. Subscriptions to task state and progress 4. Real-time sharing of intermediate discoveries between agents We tested this on a Putnam-level math problem, but the…

    Feb 2026 · github.com · its alternatives →

  16. 16

    Path-scoped memory, rules & skills for your AI coding agent

    Jun 2026 · pathrule.io · its alternatives →

  17. 17

    No-code AI agents & #1 chat UI for GPT, Gemini, Claude+

    2024 · aiassistify.io · its alternatives →

  18. 18

    Discover and share coding rules designed for AI coding tools

    2025 · its alternatives →

  19. 19

    Vibe Coding? Stop your AI Agent from guessing.

    2025 · chromewebstore.google.com · its alternatives →

  20. 20

    I built my own AI coding agent for you.

    Oct 2025 · snailer.ai · its alternatives →

  21. 21

    Agentic coding IDE for Mac

    Jun 2026 · builderstudio.dev · its alternatives →

  22. 22

    Build AI agents from intent, not flowcharts

    Mar 2026 · studio.aixplain.com · its alternatives →

  23. 23

    Your AI has your code's text, never its map. Fix that.

    Jun 2026 · luuuc.github.io · its alternatives →

  24. 24

    Chat with AI in your terminal to build websites free

    2025 · github.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 →