splash

SplashCompareSupacode

Splash and Supacode, compared.

Splash and Supacode both run several coding agents at once, with git worktrees to keep their work apart. Supacode, a native macOS app that embeds libghostty, runs each agent’s own command-line interface in a terminal. Splash, a desktop app for macOS, Windows and Ubuntu, drives agents over the Agent Client Protocol and shows each session as a transcript.

Checked 10 October 202648 sourcesNot affiliated with Supabit

Splash

Helge Sverre

A desktop app for running several coding agents at once, each session in its project folder or its own git worktree. It drives agents over the Agent Client Protocol.12

splash.computer

Supacode

Supabit

A native macOS app that runs terminal coding agents side by side. Each task gets a separate git worktree and Ghostty terminal, with GitHub pull request and CI status and a CLI for scripting.345

supacode.sh

Side by side

SplashSupacode
The basics
What it is Desktop app, plus a headless server you open in a browser16 Native macOS app that runs terminal coding agents in git worktrees, plus a supacode CLI and supacode:// deeplinks43
Release status v0.2.1, early development17 v0.10.8 (3 August 2026); the site labels the download beta, and a Tip channel ships continuous pre-release builds891011
License Open source (MIT)12 FSL-1.1-ALv2, which bars competing commercial use; each version becomes Apache 2.0 after two years. The site calls it open source139
Price Free14 Free download, labeled beta; no paid plan or price is published9
Platforms macOS 14+ (Apple silicon and Intel), Windows 11 x64, Ubuntu 24.04 x6415 macOS 26 or newer, as a DMG or through Homebrew; a release note mentions Intel Macs. No Windows, Linux or mobile client16917
Built with Rust, with a Svelte 5 frontend in a webview, built on the Elyra framework18 SwiftUI, The Composable Architecture and GhosttyKit (libghostty); no Electron or web wrapper169
Agents
Agents Ships launch commands for 20 agents, including Claude Code, Codex, Copilot, Gemini, Goose, OpenCode1920 Hooks for 11 agents, including Claude Code, Codex, Copilot CLI, OpenCode, Kimi Code and Pi; any other agent that runs in a shell also works2122
How it runs agents Agent Client Protocol over stdio, natively or through a pinned adapter for the vendor’s CLI192 Each agent’s CLI in a Ghostty terminal under zmx; hooks Supacode installs report presence and notifications over OSC 3008; neither docs nor source mention ACP232425
Agent sign-in Who pays for the model You install and sign in to each agent’s CLI yourself; Splash runs it with that login20 You bring your own CLI agents; the docs don’t say how they sign in or whether Supacode bills for models926
Account required Splash has no accounts; splash-server asks for a token it keeps in its data folder276 No Supacode account; GitHub features use your gh login, and Supacode keeps no GitHub credentials of its own2826
Permission requests When an agent asks before it acts Yes: Shown in the transcript and answered with the 1–9 keys; pending ones wait in Needs attention29 Partly: Answered in the agent’s own terminal; Supacode documents no approval view, and its awaiting-input badge covers some agents30321
Working in parallel
Isolation per session Yes: The project folder, or a git worktree on its own branch per session29 Yes: A git worktree on its own branch and folder per task, under ~/.supacode/repos by default; plain folders also work31223
Setup scripts and dev servers No: A worktree is a plain git checkout; Splash runs no setup scripts or dev servers2932 Yes: Setup, run and archive scripts per repository, plus named custom scripts; new worktrees can copy ignored files. No port handling is documented33334
Terminal Yes: A terminal in the session folder29 Yes: A Ghostty terminal per worktree with tabs, splits and find, using your Ghostty config; sessions outlast app restarts through zmx30223
What needs you Yes: One queue for permission requests, connection failures and finished turns, kept across restarts2935 Yes: Live badges from agent hooks: busy and idle, plus awaiting input for some; worktrees that need you move to the top321
Notifications Yes: Notifies when a background session needs permission or finishes a turn; can be turned off3637 Yes: In-app and optional macOS notifications, tied to the terminal that raised them, with sounds, muting and menu bar unread counts30338
Review and shipping
Review changes Yes: Latest response, failed tools and every changed file as a diff, with a box to send feedback29 No: No diff viewer or feedback-to-agent action is documented; the toolbar shows lines added and removed3940
Files and diffs Partly: File tree, git changes and diff tabs; files open read-only, with no editor2941 Partly: Stable builds document no file or diff view; worktrees open in an external editor such as Zed, Cursor or Trae. Tip builds add a file explorer34424310
Create pull requests No: Shows the PR for a session’s branch and starts worktrees from PR heads; does not create PRs2944 No: Not documented; PR actions apply to branches that already have an open PR: open, mark ready, merge and close5
GitHub Yes: Issues, pull requests and Actions runs across repositories, through the gh CLI2944 Yes: Through gh: PR and draft state, checks, failing-check details and job reruns, merge-queue state, and merging with the repo’s strategy52845
Other code hosts Besides GitHub No: github.com through the gh CLI; no other hosts44 Partly: GitLab merge requests through glab, in Tip builds; stable v0.10.8 and the docs cover GitHub alone4610
Issue trackers Partly: GitHub (github.com), through the gh CLI; no Linear or Jira2944 No: None documented; the GitHub integration covers pull requests and CI checks, not issues, and Linear and Jira aren’t mentioned528
Where it runs
Remote access Yes: splash-server runs on the machine with your code; you use it in a browser over an SSH tunnel. Single user.6 Partly: Beta: manages worktrees of repositories on SSH hosts, Linux included; sessions survive dropped connections if the host has zmx338
Auto-update No: Download new versions from GitHub Releases; the app does not update itself1547 Yes: Updates itself through Sparkle, from a Stable channel or a faster Tip channel11
History and search
Existing agent history Conversations started outside the app Yes: Browse, preview and import conversations agents list over ACP, including ones started outside Splash2935 Not documented: Not documented; Supacode’s own terminal sessions persist across app restarts303
Search transcripts Yes: Search titles, folders and saved transcript text, archived sessions included29 Partly: Find in a worktree’s terminal output and a fuzzy command palette for repositories and branches; no cross-session search is documented3048

Where they differ

How agents connect

Supacode runs each agent’s own CLI in an embedded Ghostty terminal, so any shell-based agent works. For 11 agents it installs hooks that report, as OSC 3008 sequences, whether the agent is busy or idle and, for some, awaiting input; it skips any agent not yet set up. Splash speaks the Agent Client Protocol with every agent and draws messages, tool calls, diffs and permission requests itself.2232125241192

Where agents run

Supacode runs on macOS 26 or newer. Its terminal sessions live in zmx, a session daemon, so they outlast the app, and a beta feature manages repositories on SSH hosts, Linux among them. Splash runs on macOS, Windows and Ubuntu, or as splash-server on the machine that holds your code, which you open in a browser over an SSH tunnel.16338156

Price, accounts and license

Supacode is a free download labeled beta, with no paid plan published and no Supacode account described. Its source is public under the Functional Source License 1.1, which bars competing commercial use and turns each version into Apache 2.0 after two years; the homepage calls it open source. Splash is free, MIT-licensed and has no accounts.92813121427

What each is built around

Supacode centers on the worktree and its terminal: setup, run and archive scripts, a CLI and supacode:// deeplinks, and pull request status, CI reruns and merging through gh; no diff viewer is documented. Splash centers on the conversation: a Needs attention queue, a review screen with diffs and feedback, transcript search, and importing sessions agents started elsewhere.3335392935

Which one fits

Splash may suit you if

  • You work on Windows or Ubuntu as well as macOS, or on a Mac running a release older than macOS 26.
  • You want each agent’s messages, tool calls and diffs drawn as a transcript, with permission requests answered in the app.
  • You want to review every changed file as a diff and send feedback to the agent from the same window.
  • You want to import conversations your agents started outside the app and search them with the rest.

Supacode may suit you if

  • You want each agent’s own terminal interface in a native macOS app that embeds libghostty.
  • You want setup, run and archive scripts per repository, and terminal sessions that outlast the app.
  • You want to follow pull requests, rerun failed CI jobs and merge in the app through gh.
  • You want to drive worktrees, tabs and splits from a CLI or deeplinks, or manage repositories on SSH hosts.

Sources

Facts about Supacode come from its public website, documentation and repositories as they read on 10 October 2026; we haven't confirmed each one by running Supacode. Facts about Splash link to its source. Products change, so check the linked pages before deciding. Something wrong or out of date? Open an issue.

  1. 1 Splash README Splash on GitHub · github.com · checked 2026-10-09
  2. 2 Agent Client Protocol agentclientprotocol.com · agentclientprotocol.com · checked 2026-10-09
  3. 3 README.md supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  4. 4 Supacode Docs Supabit · docs.supacode.sh · checked 2026-10-10
  5. 5 Pull Requests and CI Supabit · docs.supacode.sh · checked 2026-10-10
  6. 6 Splash README: Run as a web app over SSH Splash on GitHub · github.com · checked 2026-10-09
  7. 7 Splash releases Splash on GitHub · github.com · checked 2026-10-09
  8. 8 Release v0.10.8 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  9. 9 Supacode Supabit · supacode.sh · checked 2026-10-10
  10. 10 Supacode Tip ("Nightly") supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  11. 11 Updates Supabit · docs.supacode.sh · checked 2026-10-10
  12. 12 LICENSE Splash on GitHub · github.com · checked 2026-10-09
  13. 13 LICENSE supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  14. 14 Download Splash splash.computer · splash.computer · checked 2026-10-09
  15. 15 Splash README: Download the app Splash on GitHub · github.com · checked 2026-10-09
  16. 16 Installation Supabit · docs.supacode.sh · checked 2026-10-10
  17. 17 Release v0.10.1 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  18. 18 Splash README: How it works Splash on GitHub · github.com · checked 2026-10-09
  19. 19 src/agents/registry.rs Splash on GitHub · github.com · checked 2026-10-09
  20. 20 Splash README: Agents Splash on GitHub · github.com · checked 2026-10-09
  21. 21 SupacodeSettingsShared/Models/SkillAgent.swift supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  22. 22 FAQ Supabit · docs.supacode.sh · checked 2026-10-10
  23. 23 supacode/Clients/Zmx/ZmxClient.swift supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  24. 24 supacode/Infrastructure/AgentHookSocketServer.swift supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  25. 25 SupacodeSettingsShared/BusinessLogic/AgentIntegration.swift supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  26. 26 Privacy Supabit · docs.supacode.sh · checked 2026-10-10
  27. 27 Splash README: Build from source Splash on GitHub · github.com · checked 2026-10-09
  28. 28 GitHub CLI Integration Supabit · docs.supacode.sh · checked 2026-10-10
  29. 29 Splash README: Features Splash on GitHub · github.com · checked 2026-10-09
  30. 30 Terminal Supabit · docs.supacode.sh · checked 2026-10-10
  31. 31 Your First Worktree Supabit · docs.supacode.sh · checked 2026-10-10
  32. 32 src/worktree.rs Splash on GitHub · github.com · checked 2026-10-09
  33. 33 Repository Commands Supabit · docs.supacode.sh · checked 2026-10-10
  34. 34 Repository Settings Supabit · docs.supacode.sh · checked 2026-10-10
  35. 35 Splash README: Existing sessions and review Splash on GitHub · github.com · checked 2026-10-09
  36. 36 app/src/components/settings/General.svelte Splash on GitHub · github.com · checked 2026-10-09
  37. 37 app/src/lib/system.ts Splash on GitHub · github.com · checked 2026-10-09
  38. 38 Release v0.10.7 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  39. 39 supacode/Clients/Git/GitClient.swift at v0.10.8 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  40. 40 Release v0.5.1 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  41. 41 app/src/components/FileTab.svelte Splash on GitHub · github.com · checked 2026-10-09
  42. 42 Release v0.10.6 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  43. 43 Add a file explorer to the worktree inspector (#769) supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  44. 44 Splash README: GitHub view Splash on GitHub · github.com · checked 2026-10-09
  45. 45 Release v0.10.0 supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  46. 46 Abstract git forges and add GitLab support (#816) supabitapp/supacode on GitHub · github.com · checked 2026-10-10
  47. 47 app/src/components/settings/About.svelte Splash on GitHub · github.com · checked 2026-10-09
  48. 48 Command Palette Supabit · docs.supacode.sh · checked 2026-10-10