--- title: "agentsys vs plandex" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/agent-sh-agentsys-vs-plandex-ai-plandex" tools: ["agent-sh-agentsys", "plandex-ai-plandex"] --- # agentsys vs plandex *GraphCanon updated Aug 20, 2026* ## Verdict Pick agentsys if agentsys supports automation through AI agents that handle various coding environments with plugins and skills; pick plandex if designed for large-scale projects with features like REPL mode and CLI integration. [agentsys](https://agent-sh.github.io/agentsys/) reports 962 GitHub stars, 111 forks, and 0 open issues, last pushed Jul 26, 2026. [plandex](https://plandex.ai) has 16k stars, 1.2k forks, and 60 open issues, last pushed Oct 3, 2025. Figures are from public GitHub metadata via [agentsys's repository](https://github.com/agent-sh/agentsys) and [plandex's repository](https://github.com/plandex-ai/plandex). | | [agentsys](/tools/agent-sh-agentsys.md) | [plandex](/tools/plandex-ai-plandex.md) | | --- | --- | --- | | Tagline | AI writes code to automate workflows and tasks | Open source AI coding agent | | Stars | 962 | 15,588 | | Forks | 111 | 1,172 | | Open issues | 0 | 60 | | Language | JavaScript | Go | | Adopt for | agentsys supports automation through AI agents that handle various coding environments with plugins and skills. | Designed for large-scale projects with features like REPL mode and CLI integration. | | Persona | - | - | | Runtime | - | - | | License | MIT | MIT License: Permissive open-source license allowing for free use, modification, and distribution. | | Categories | AI Agents, Developer Tools | AI Agents, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [agentsys](/tools/agent-sh-agentsys.md) | [plandex](/tools/plandex-ai-plandex.md) | | --- | --- | --- | | Maintenance | Active (82%) | Slowing (36%) | | Days since push | 16d | 320d | | Open issues (now) | 0 | 60 | | Stars delta | Unknown | +52 (30d) | | Open issues delta | Unknown | +1 (30d) | | Full report | [trust report](/tools/agent-sh-agentsys/trust.md) | [trust report](/tools/plandex-ai-plandex/trust.md) | ## Decision facts: agentsys - **Pricing:** freemium - MIT licensed tool offers open access for free but may include premium plugins or skills. - **Requirements:** Min 2 GB RAM; Requires modern JavaScript environment to run effectively.; Ensure internet connectivity due to reliance on plugins and skills that may require update downloads or external API access for certain functionalities. - **Adopt for:** agentsys supports automation through AI agents that handle various coding environments with plugins and skills. ## Decision facts: plandex - **Pricing:** freemium - Primarily an open source tool that supports self-hosting. Requires your own OpenRouter.ai key or other model provider accounts/API keys for model access. - **Requirements:** Requires Docker; Plandex requires Docker for local mode installation.; Installation supports only command-line methods including a one-liner and detailed steps using WSL on Windows machines. - **Adopt for:** Designed for large-scale projects with features like REPL mode and CLI integration. - **License detail:** MIT License: Permissive open-source license allowing for free use, modification, and distribution. ## Choose when ### Choose agentsys if… - agentsys is primarily JavaScript; plandex is Go. - Pricing: MIT licensed tool offers open access for free but may include premium plugins or skills.. - Requirements: Min 2 GB RAM; Requires modern JavaScript environment to run effectively.; Ensure internet connectivity due to reliance on plugins and skills that may require update downloads or external API access for certain functionalities.. - Tags unique to agentsys: agent, ai, automation, autonomous-agents. - Use when you need to automate complex workflows in JavaScript-heavy projects, as it integrates well with JavaScript environments like Claude Code. ### Choose plandex if… - plandex is primarily Go; agentsys is JavaScript. - Pricing: Primarily an open source tool that supports self-hosting. Requires your own OpenRouter.ai key or other model provider accounts/API keys for model access.. - Requirements: Requires Docker; Plandex requires Docker for local mode installation.; Installation supports only command-line methods including a one-liner and detailed steps using WSL on Windows machines.. - Tags unique to plandex: ai-agents, cli, developer-tools, golang. - You are working on extensive software projects where an AI coding agent can assist in managing complexity. ## When NOT to use agentsys - Avoid for teams not proficient in JavaScript or those preferring languages where agentsys does not provide comparable support. - Do not use if your project scope is better served by competitors with more specialized skill sets that align closely with niche requirements, as opposed to the general utility approach of agentsys. ## When NOT to use plandex - If you require cloud-hosting options for extra reliability and convenience since Plandex Cloud is winding down as of 10/3/2025 and no longer accepts new users. - You are working in a Windows environment without WSL, as Plandex only functions correctly on Windows within the WSL shell. ## Common questions ### What is the difference between agentsys and plandex? agentsys: AI writes code to automate workflows and tasks. plandex: Open source AI coding agent. See the comparison table for live GitHub stats and shared categories. ### When should I choose agentsys over plandex? Choose agentsys over plandex when agentsys is primarily JavaScript; plandex is Go; Pricing: MIT licensed tool offers open access for free but may include premium plugins or skills.; Requirements: Min 2 GB RAM; Requires modern JavaScript environment to run effectively.; Ensure internet connectivity due to reliance on plugins and skills that may require update downloads or external API access for certain functionalities.; Tags unique to agentsys: agent, ai, automation, autonomous-agents; Use when you need to automate complex workflows in JavaScript-heavy projects, as it integrates well with JavaScript environments like Claude Code. ### When should I choose plandex over agentsys? Choose plandex over agentsys when plandex is primarily Go; agentsys is JavaScript; Pricing: Primarily an open source tool that supports self-hosting. Requires your own OpenRouter.ai key or other model provider accounts/API keys for model access.; Requirements: Requires Docker; Plandex requires Docker for local mode installation.; Installation supports only command-line methods including a one-liner and detailed steps using WSL on Windows machines.; Tags unique to plandex: ai-agents, cli, developer-tools, golang; You are working on extensive software projects where an AI coding agent can assist in managing complexity. ### When should I avoid agentsys? Avoid for teams not proficient in JavaScript or those preferring languages where agentsys does not provide comparable support. Do not use if your project scope is better served by competitors with more specialized skill sets that align closely with niche requirements, as opposed to the general utility approach of agentsys. ### When should I avoid plandex? If you require cloud-hosting options for extra reliability and convenience since Plandex Cloud is winding down as of 10/3/2025 and no longer accepts new users. You are working in a Windows environment without WSL, as Plandex only functions correctly on Windows within the WSL shell. ### Is agentsys or plandex more popular on GitHub? plandex has more GitHub stars (15,588 vs 962). Stars measure visibility, not whether either tool fits your constraints. ### Are agentsys and plandex open source? Yes - both are open-source projects on GitHub (agentsys: MIT, plandex: MIT). ### Where can I find alternatives to agentsys or plandex? GraphCanon lists graph-backed alternatives at [agentsys alternatives](/tools/agent-sh-agentsys/alternatives) and [plandex alternatives](/tools/plandex-ai-plandex/alternatives) ([agentsys markdown twin](/tools/agent-sh-agentsys/alternatives.md), [plandex markdown twin](/tools/plandex-ai-plandex/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/agent-sh-agentsys-vs-plandex-ai-plandex.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, agentsys or plandex? agentsys: Active. plandex: Slowing. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for agentsys and plandex? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [agentsys trust report](/tools/agent-sh-agentsys/trust); [plandex trust report](/tools/plandex-ai-plandex/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=agent-sh-agentsys`](/api/graphcanon/graph?tool=agent-sh-agentsys) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_