Alternatives
10 best Boxes.dev alternatives
Tools that cover the same task as Boxes.dev (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Boxes.dev starts at
- Not listed
- Free plan
- Free plan
- API
- API available
- 01
cmux
cmux is a free, open-source macOS terminal built on Ghostty for multitasking with AI coding agents. It adds vertical tabs, split panes, notification rings, an in-app browser, and optional cloud VMs on paid plans for remote agent sandboxes.
Best for: Mac developers running Claude Code, Codex, Gemini CLI, or other terminal agents who want organized workspaces and optional cloud VMs.
- 02
Maritime
Maritime hosts persistent AI agents, each in its own Firecracker micro-VM with durable disk. Agents sleep when idle, wake in about a second, and scale from a free tier to paid plans with configurable RAM, SSD, and always-on options.
Best for: Developers shipping user-specific or long-running agents who need isolated VMs with fast wake times.
- 03
AI Native Dev Landscape
Tessl is an agent enablement platform for managing skills, plugins, reviews, and evals so teams can standardize how coding agents work.
Best for: Engineering teams adopting agentic development who need governed skills, reviews, and shared context.
- 04
Composio
Composio is an agent integration platform with 1,500+ toolkits, OAuth and trigger handling, SDKs, CLI, and MCP endpoints so coding agents and chat apps can call Gmail, Slack, GitHub, and other SaaS APIs securely. Hobby and Pro tiers meter tool calls and triggers while Enterprise adds SSO, governance, and custom billing.
Best for: Developers and teams shipping agents in Claude, Cursor, Codex, or custom harnesses who need managed OAuth, triggers, and a broad SaaS action catalog.
- 05
Capy
Capy is an AI software engineer that orchestrates parallel cloud coding agents to plan, build, review, and ship changes from Slack, desktop, and web clients. Use cases include PR review, visual QA, issue triage, documentation, migrations, refactors, and scheduled E2E testing.
Best for: Engineering teams that want fleet-style coding agents integrated into existing chat and desktop workflows.
- 06
Freestyle
Freestyle provides full Linux VMs purpose-built for long-running AI agents with millisecond startup, live cloning, pause/resume, nested Docker, and custom networking. Developers use the VMs for coding agents, browser automation, and containerized workloads.
Best for: Teams building autonomous agents that need persistent Linux environments, previews, and Docker inside the VM.
- 07
Cosine
Cosine, hosted at cosine.sh, is a sovereign AI lab training specialized coding agents and models for secure environments. It offers Lumen Scout, Outpost, and Sovereign models plus CLI and cloud surfaces with transparent credit-based plans for developers and regulated teams.
Best for: Developers and organizations that need frontier coding agents inside secure or air-gapped deployments with credit-based usage.
- 08
Letta
Letta is an AI research lab and product company building stateful agents whose memory and capabilities evolve over time, originating from MemGPT research. It ships Letta Agent software, a CLI, and cloud plans for individuals, teams, and API developers.
Best for: Engineers and teams building long-horizon coding or workflow agents that need durable memory and sandboxed execution.
- 09
GitHub Copilot
GitHub Copilot is GitHub's AI coding agent suite spanning IDE completion, chat, agent mode, code review, CLI, and cloud agents. Individual plans meter GitHub AI Credits for chat and agent usage while Free offers limited access and paid tiers raise credit allotments.
Best for: Developers who want Copilot embedded in GitHub workflows from local IDE assistance through cloud agents.
- 10
Revdoku
Revdoku gives AI agents dedicated email inboxes with cloud storage, attachment handling, and REST, CLI, or MCP access. Teams provision mailboxes, connect AI workflows, and manage files generated by agents or APIs under EU hosting options.
Best for: Developers building AI agents that need real email addresses and file storage integrations.
Boxes.dev alternatives: common questions
What is the best free alternative to Boxes.dev?
cmux has an ongoing free plan. Free tier includes the native macOS terminal, local agents with your own API keys, and community support at $0/month. Free plans change, so check the vendor before relying on one.
What is the cheapest Boxes.dev alternative?
Revdoku has the lowest listed starting price at $9.99/mo.
Which Boxes.dev alternatives have an API?
cmux, Maritime, Composio, Capy, Freestyle mention API or developer access.