Symphony alternatives
Symphony by OpenAI costs Free (OSS) and is open source. If you need something cheaper, open source, self-hosted or simply different, here are 10 alternatives that do the same job, ranked by how widely they are used, with the differences that matter.
10 Symphony alternatives, by popularity
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Self-hostable workspace from Block where people and AI agents share the same channels; messages, workflows, reviews and Git events are signed events on a relay you own (Nostr).
- Less widely used (Gid Score 43 vs 76)
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Make humans and AI agents work as one team — open-source and self-hostable.
- Proprietary
- Less widely used (Gid Score 42 vs 76)
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Open source Ghostty-based macOS terminal with vertical tabs and notifications for AI coding agents. Built for multitasking, organization, and programmability.
- Proprietary
- Less widely used (Gid Score 41 vs 76)
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Ralph is an autonomous AI agent loop that runs repeatedly until all PRD items are complete.
- Less widely used (Gid Score 38 vs 76)
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Gas Town - multi-agent workspace manager
- Less widely used (Gid Score 37 vs 76)
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Superset is an agentic IDE to orchestrate 100+ coding agents in parallel. Run any agent with your own subscription.
- Proprietary
- Less widely used (Gid Score 36 vs 76)
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Bridge local AI coding agents (Claude Code, Cursor, Gemini CLI, Codex) to messaging platforms (Feishu/Lark, DingTalk, Slack, Telegram, Discord, LINE, WeChat Work). Chat with your AI dev assistant from anywhere — no public IP required for most platforms.
- Proprietary
- Less widely used (Gid Score 36 vs 76)
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Multiplayer agent harness for work.
- Less widely used (Gid Score 36 vs 76)
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Autonomous multi-session AI coding
- Less widely used (Gid Score 35 vs 76)
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Orchestrate multiple coding agents from desktop and mobile
- Proprietary
- Less widely used (Gid Score 34 vs 76)
Symphony vs alternatives at a glance
| Agent | Price | Free to start | Open source | MCP | Local models | Gid Score |
|---|---|---|---|---|---|---|
| Symphony | Free (OSS) | ✓ | ✓ | ? | ? | 76 |
| Buzz | Free (OSS) | ✓ | ✓ | ? | ? | 43 |
| Multica | — | ? | ✕ | ? | ? | 42 |
| Cmux | — | ? | ✕ | ? | ? | 41 |
| Ralph | Free (OSS) | ✓ | ✓ | ? | ? | 38 |
| Gastown | Free (OSS) | ✓ | ✓ | ? | ? | 37 |
| Superset | — | ? | ✕ | ? | ? | 36 |
| CC Connect | — | ? | ✕ | ? | ? | 36 |
| QM | Free (OSS) | ✓ | ✓ | ? | ? | 36 |
| Aperant | Free (OSS) | ✓ | ✓ | ? | ? | 35 |
| Paseo | — | ? | ✕ | ? | ? | 34 |
Prices from the vendors' pricing pages; features from official docs (“?” means not documented). Full feature comparison · All prices
FAQ
What is the best alternative to Symphony?
By usage, the closest alternative is Buzz, followed by Multica, Cmux, Ralph.
Is there a free alternative to Symphony?
Yes. Buzz is free to start.
Is there an open-source alternative to Symphony?
Yes. Buzz is open source.
How do these Symphony alternatives compare on price?
Buzz: Free (OSS); Ralph: Free (OSS); Gastown: Free (OSS).
Symphony: pricing, features and stats · All agent orchestration and team workspaces · Find the right agent in 4 questions