# Alternatives to Modurian

> Source: https://theagentsindex.com/modurian/alternatives (re-verified)

Best match first.

## Shortlist

### 1. Replit Agent

Chat-driven agent that builds, tests and publishes full web and mobile apps on Replit's cloud.

**Where it improves on Modurian:**
- [Whole-codebase work: partial — Max Mode is positioned for larger codebases and tasks can carry dependencies, but no repository-wide migration guarantee or size limit is published.](https://docs.replit.com/features/agent/agent-modes)
- [Multi-agent: yes — Several tasks run in parallel with automatic dependency detection and AI-assisted conflict resolution, though the ceiling varies sharply by plan.](https://docs.replit.com/core-concepts/agent/task-system)
- [Bring your own key: partial — You can supply provider keys for models your own app calls, but the inference behind Agent itself is fixed to Replit's infrastructure.](https://docs.replit.com/help/agent-and-ai)

**Trade-offs against Modurian:**
- None found.

[View Replit Agent](https://theagentsindex.com/replit-agent)

### 2. Codex CLI

OpenAI's terminal coding agent for inspecting, editing and running repository code from the shell.

**Where it improves on Modurian:**
- [Whole-codebase work: partial — Documented for repository-wide exploration and multi-step plans; the vendor states no repo-wide migration guarantee.](https://learn.chatgpt.com/docs/agent-configuration/subagents)
- [Runs autonomously: yes — Approval prompts can be switched off entirely, including a no-sandbox full-access mode.](https://learn.chatgpt.com/docs/agent-approvals-security)
- [Multi-agent: yes — Spawns parallel subagents and consolidates their results; /agent switches between threads.](https://learn.chatgpt.com/docs/agent-configuration/subagents)

**Trade-offs against Modurian:**
- [Ships it: partial — Locally it stops at edits plus commands you allow; pull requests are opened from Codex cloud or the GitHub Action.](https://learn.chatgpt.com/docs/prompting)

[View Codex CLI](https://theagentsindex.com/codex-cli)

### 3. Cursor

Coding agent in a desktop editor, terminal CLI, cloud VMs and CI, priced per seat plus token usage.

**Where it improves on Modurian:**
- [Whole-codebase work: yes — Cloud agents work across multiple repositories in one task and raise a pull request in each repo they touch.](https://cursor.com/docs/cloud-agent)
- [Runs autonomously: yes — Tasks complete without a human in the loop; /goal keeps the agent working towards an objective, and cloud agents run with the laptop closed.](https://cursor.com/docs/agent/overview)
- [Multi-agent: yes — Subagents run in parallel in their own context windows in editor, CLI and cloud; /multitask and Build in Parallel fan a plan out across them.](https://cursor.com/docs/subagents)

**Trade-offs against Modurian:**
- [Ships it: partial — It stops at the branch and pull request; deployment stays with your own CI, though a CLI run in CI can be given git and gh access.](https://cursor.com/docs/cloud-agent)

[View Cursor](https://theagentsindex.com/cursor)

### 4. Devin

Cloud AI software engineer that takes a ticket, works in its own VM, and opens a pull request.

**Where it improves on Modurian:**
- [Whole-codebase work: yes — Migrations spanning many files, modules or whole repositories are the stated use for fanning work out to parallel sessions.](https://docs.devin.ai/work-with-devin/advanced-capabilities)
- [Runs autonomously: yes — Automations and schedules start sessions from events, so Devin works the task with nobody tagging it.](https://docs.devin.ai/product-guides/automations)
- [Multi-agent: yes — A coordinator Devin delegates to child sessions running in parallel, each on its own isolated VM.](https://docs.devin.ai/work-with-devin/advanced-capabilities)

**Trade-offs against Modurian:**
- [Ships it: partial — Stops at the pull request in your repository; your team merges and ships through its existing pipeline.](https://docs.devin.ai/product-guides/deployment-capabilities)

[View Devin](https://theagentsindex.com/devin)

### 5. Kilo Code

Open source AI coding agent for VS Code, JetBrains, CLI and cloud, with 500+ models at provider rates.

**Where it improves on Modurian:**
- [Whole-codebase work: yes — Indexes the repository and runs multi-step repo-wide work such as migrations.](https://kilo.ai/)
- [Runs autonomously: yes — Cloud Agents run long tasks unattended in isolated containers and open PRs.](https://kilo.ai/)
- [Multi-agent: yes — Orchestrator mode coordinates other modes; the CLI and JetBrains plugin run parallel agents in isolated worktrees.](https://kilo.ai/cli)

**Trade-offs against Modurian:**
- [Ships it: partial — Cloud Agents commit and push to a session branch and raise pull requests; the vendor names deployments only in a comparison claim, and documents no deploy pipeline.](https://kilo.ai/cloud)

[View Kilo Code](https://theagentsindex.com/kilo-code)

### 6. Letta

Stateful agent harness, cloud and SDK for agents with persistent, git-versioned memory.

**Where it improves on Modurian:**
- [Whole-codebase work: partial — Subagents read across large repositories and memory persists project knowledge, but no repo-wide migration claim.](https://docs.letta.com/configuration/subagents/index.md)
- [Runs autonomously: yes — Headless CLI runs, scheduled prompts and subagents execute without a human turn; unrestricted mode auto-allows tools.](https://docs.letta.com/configuration/subagents/index.md)
- [Multi-agent: yes — Seven built-in subagent types plus deploying any existing stateful agent as a subagent, in parallel or background.](https://docs.letta.com/configuration/subagents/index.md)

**Trade-offs against Modurian:**
- [Ships it: partial — Commits, pushes and opens pull requests; it cannot approve PRs and no deployment step is claimed.](https://docs.letta.com/platform/github-action/index.md)

[View Letta](https://theagentsindex.com/letta)