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Tern vs Ubra
Tern by Stencil presents a native developer workspace with persistent sessions, graphical surfaces and access from desktop, browser and iPhone. Ubra focuses on coordinating coding-agent CLIs with Git worktrees and change review on macOS. Both require checking availability before planning a switch.
Last updated: · By Ubra maintainers
Feature comparison table
Tern details are based on the linked project documentation, reviewed October 9, 2026. We have not independently benchmarked these tools. Availability and integrations can change. See all tools on the comparison hub.
| Area | Ubra | Tern |
|---|---|---|
| Focus | Parallel coding-agent sessions, worktrees and review | Native developer workspace with terminal sessions and graphical blocks |
| Runtime | Rust/GPUI desktop app and Engine | Rust-native workspace with a session daemon |
| Clients | macOS 15+ desktop; supported SSH-host sessions | Product page presents desktop, browser and iPhone access |
| Agent integration | Claude Code and Codex have deepest status/resume integration | Product page emphasizes omp; verify your required agent integration |
| Git and files | Diffs, staging, commits and PR checks alongside sessions | Product page demonstrates Git, files and other workspace blocks |
| Availability | No release installers published; source available | Closed beta with a Stencil-account waitlist |
| Cost | Free, open source; agent plans separate | Confirm current terms with Stencil; no price inferred from the demo |
Choose Tern if
- You want the broader graphical workspace presented by Stencil.
- Browser or iPhone access is central to your evaluation.
- You use omp and are willing to join the closed-beta waitlist.
Choose Ubra if
- Your priority is parallel Claude Code or Codex CLI work on macOS.
- You want an open-source workspace with explicit worktree and review workflows.
- You accept prerelease availability and separate agent-provider accounts.
Sources and availability
An undocumented capability is not necessarily absent. Check the exact version and integration you need before switching. Ubra does not replace your agent CLI or its provider account.
Get notified when Ubra is available
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