splash

SplashCompareMonoCode

Splash and MonoCode, compared.

Splash and MonoCode are both open-source desktop apps that run the coding agent CLIs you already have, with git worktrees for parallel sessions. MonoCode, built on Tauri, has a separate adapter for each of its eleven agents, six of them over the Agent Client Protocol (ACP); Splash drives every agent over ACP.

Checked 10 October 202641 sourcesNot affiliated with Nick (hardbeat920)

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

MonoCode

Nick (hardbeat920)

An open-source Tauri desktop app that runs eleven installed coding agent CLIs, with worktrees, an Inbox for issues and pull requests, automations, and experimental Monos and remote hosts.34567

usemono.dev

Side by side

SplashMonoCode
The basics
What it is Desktop app, plus a headless server you open in a browser18 Tauri desktop app, Rust with a React frontend, for the agent CLIs on your machine; an experimental host service runs agents elsewhere95107
Release status v0.2.1, early development111 v0.11.0 of 9 October 2026; 70 releases since 0.1.0 on 20 August, and the README calls it still early126133
License Open source (MIT)14 Open source (MIT); provider names and logos remain their owners’ trademarks43
Price Free15 No price, paid tier or checkout is listed, and MonoCode sells no tokens; models bill through your own agent plans or keys9316
Platforms macOS 14+ (Apple silicon and Intel), Windows 11 x64, Ubuntu 24.04 x6417 macOS (Apple silicon and Intel), Windows x64, Linux x64 (.deb, AppImage, .rpm); the remote host also comes in arm64123187
Account required Splash has no accounts; splash-server asks for a token it keeps in its data folder198 No MonoCode account is mentioned; the stated prerequisite is one supported agent CLI, installed and signed in316
Agents
Agents Ships launch commands for 20 agents, including Claude Code, Codex, Copilot, Gemini, Goose, OpenCode2021 Claude Code, Codex, Cursor, Grok Build, OpenCode, Antigravity (macOS and Linux), Pi, omp, fx, Hermes Agent and Devin; adding others isn’t documented93622
How it runs agents Agent Client Protocol over stdio, natively or through a pinned adapter for the vendor’s CLI202 Each CLI as a child process: ACP for six agents, plus Claude Code stream-json, Codex app-server, OpenCode’s HTTP server and Pi/omp RPC23242526272867
Model and mode pickers Yes: Model, mode and effort pickers when the agent offers them29 Yes: Model and effort pickers; hand a finished turn to another provider, or ask one for a second opinion, in a split pane beside it6
Agent sign-in You install and sign in to each agent’s CLI yourself; Splash runs it with that login21 Reuses each CLI’s login and can open browser sign-in for five agents; Claude Code and Codex take several named accounts3166
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 Yes: Approval and question prompts in the transcript; access modes such as Supervised and Full Access; with supported agents, /plan waits for you to approve a plan6
MCP servers Partly: Read-only list of MCP servers from Claude Code, Codex, Pi, Pool and Glue config files2930 Yes: Settings finds, adds and removes servers for Claude Code, Claude Desktop, Codex, Cursor and OpenCode; /mcp picks which ones to use6
Working in parallel
Isolation per session Yes: The project folder, or a git worktree on its own branch per session29 Yes: Picked per session: your current checkout, a worktree you already have, or a new worktree and branch made on its first turn631
Terminal Yes: A terminal in the session folder29 Yes: Built-in terminals belong to the project, dock to any edge and start in the current session’s worktree; remote projects have none67
What needs you Yes: One queue for permission requests, connection failures and finished turns, kept across restarts2932 Yes: A sidebar status filter that includes needs approval; pending prompts stay visible in the transcript, and sessions can carry reminders6
Notifications Yes: Notifies when a background session needs permission or finishes a turn; can be turned off3334 Yes: Optional system notifications when a turn ends or an agent waits in a hidden session; sounds, banners and mutes set per project6
Agents handing off work One agent launching or messaging another No: Each session is one agent in one folder; sessions don’t hand work to each other129 Yes: A lead agent directs up to four workers; with /operator, or as a Mono, an agent can start and message sessions6353
Scheduled tasks Agents that start without a prompt from you No: No scheduler; an agent starts when you create, continue or prompt a session36 Yes: Automations on hourly-to-weekly schedules or tracker events from GitHub, GitLab, Linear, Jira or Azure DevOps; experimental Monos repeat Habits while the app is open6373
Review and shipping
Review changes Yes: Latest response, failed tools and every changed file as a diff, with a box to send feedback29 Yes: Staged and unstaged diffs with line-by-line comments sent to the agent as one prompt; session checkpoints can be undone6
Files and diffs Partly: File tree, git changes and diff tabs; files open read-only, with no editor2938 Yes: A file tree and an editor that shows diffs, with full-text search across the project6
Create pull requests No: Shows the PR for a session’s branch and starts worktrees from PR heads; does not create PRs2939 Yes: Commit, push, pull and switch branches, then open a PR through gh; merge, close, reopen or change draft state in the app67
GitHub Yes: Issues, pull requests and Actions runs across repositories, through the gh CLI2939 Yes: Through your gh login: PR checks in the Inbox, failed checks sent to an agent, sessions linked to issues and PRs6
Issue trackers Partly: GitHub (github.com), through the gh CLI; no Linear or Jira2939 Yes: An Inbox for GitHub, GitLab, Linear, Jira Cloud and Azure DevOps items: read, comment, discuss with an agent or start a session637
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.8 Partly: Experimental: over SSH, installs a host service on a Windows, Linux or macOS machine that stays awake; sessions survive a dropped tunnel37
Auto-update No: Download new versions from GitHub Releases; the app does not update itself1740 Yes: Built-in updater with stable and beta feeds; the AppImage updates itself, while .deb and .rpm need the newer package installed18416
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 Splash2932 Not documented: Not documented; MonoCode keeps its own sessions per project, and several agents resume the ones it started6
Search transcripts Yes: Search titles, folders and saved transcript text, archived sessions included29 Yes: Global search across files, projects and earlier conversations, including message text; Find within an open transcript6

Where they differ

How agents connect

MonoCode has its own adapter for each of its eleven agents: ACP for six, plus Claude Code’s stream-json mode, Codex’s app-server, OpenCode’s HTTP server and Pi and omp RPC. No documented route adds others, and new adapters are paused for now. Splash speaks the Agent Client Protocol to every agent, natively or through a pinned adapter.24252627286722202

Where agents run

Both start agents as child processes on your computer, and neither documents a hosted service. MonoCode’s experimental remote mode installs a host service over SSH on a Windows, Linux or macOS machine that stays awake; terminals, automations and orchestration don’t work there yet. Splash can run as splash-server on the machine with your code, opened in a browser over SSH.23718

Price, license and platforms

Both are MIT-licensed. Splash is free and has no accounts; MonoCode lists no price or paid tier, and its docs mention no MonoCode account. MonoCode ships for macOS (Apple silicon and Intel), Windows x64 and Linux x64, with arm64 builds of its remote host; Splash builds for macOS 14+, Windows 11 x64 and Ubuntu 24.04 x64.4931214151917

Around the session

MonoCode extends into the work around a session: an Inbox for GitHub, GitLab, Linear, Jira and Azure DevOps, PR creation, scheduled and event-driven automations, a lead agent with up to four workers, and experimental Monos, persistent agents with memory. Splash centers on the sessions: a Needs attention queue, a GitHub view across repositories and importing conversations agents started elsewhere.63293239

Which one fits

Splash may suit you if

  • You want every agent driven over the Agent Client Protocol, including Gemini, Copilot and Goose.
  • You want to import conversations your agents started outside the app and search them with the rest.
  • You want to reach your sessions from a browser, with splash-server on the machine that holds your code.
  • You want permission requests, connection failures and finished turns in one queue that survives restarts.

MonoCode may suit you if

  • You want to open, check and merge pull requests, with GitHub, GitLab, Linear, Jira and Azure DevOps items in one Inbox.
  • You want agents that start on a schedule or from tracker events, and a lead agent that splits work among up to four workers.
  • You want to edit files in the app, with project terminals and session checkpoints you can undo.
  • You want an app that updates itself and manages MCP servers for Claude Code, Codex, Cursor and OpenCode.

Sources

Facts about MonoCode come from its public website, documentation and repositories as they read on 10 October 2026; we haven't confirmed each one by running MonoCode. 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 hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  4. 4 LICENSE hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  5. 5 src-tauri/Cargo.toml hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  6. 6 CHANGELOG.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  7. 7 Remote access (experimental) hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  8. 8 Splash README: Run as a web app over SSH Splash on GitHub · github.com · checked 2026-10-09
  9. 9 MonoCode usemono.dev · usemono.dev · checked 2026-10-10
  10. 10 package.json hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  11. 11 Splash releases Splash on GitHub · github.com · checked 2026-10-09
  12. 12 MonoCode 0.11.0 hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  13. 13 hardbeat920/monocode hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  14. 14 LICENSE Splash on GitHub · github.com · checked 2026-10-09
  15. 15 Download Splash splash.computer · splash.computer · checked 2026-10-09
  16. 16 docs/providers.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  17. 17 Splash README: Download the app Splash on GitHub · github.com · checked 2026-10-09
  18. 18 docs/install.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  19. 19 Splash README: Build from source Splash on GitHub · github.com · checked 2026-10-09
  20. 20 src/agents/registry.rs Splash on GitHub · github.com · checked 2026-10-09
  21. 21 Splash README: Agents Splash on GitHub · github.com · checked 2026-10-09
  22. 22 CONTRIBUTING.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  23. 23 src-tauri/src/harness.rs hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  24. 24 claudeProtocol.ts hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  25. 25 codex.ts hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  26. 26 opencode.ts hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  27. 27 grok.ts hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  28. 28 fx.ts hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  29. 29 Splash README: Features Splash on GitHub · github.com · checked 2026-10-09
  30. 30 src/agents/customize.rs Splash on GitHub · github.com · checked 2026-10-09
  31. 31 CreateWorktreeDialog.tsx hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  32. 32 Splash README: Existing sessions and review Splash on GitHub · github.com · checked 2026-10-09
  33. 33 app/src/components/settings/General.svelte Splash on GitHub · github.com · checked 2026-10-09
  34. 34 app/src/lib/system.ts Splash on GitHub · github.com · checked 2026-10-09
  35. 35 docs/agent-access.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  36. 36 Splash README: How it works Splash on GitHub · github.com · checked 2026-10-09
  37. 37 docs/jira.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10
  38. 38 app/src/components/FileTab.svelte Splash on GitHub · github.com · checked 2026-10-09
  39. 39 Splash README: GitHub view Splash on GitHub · github.com · checked 2026-10-09
  40. 40 app/src/components/settings/About.svelte Splash on GitHub · github.com · checked 2026-10-09
  41. 41 docs/building.md hardbeat920/monocode on GitHub · github.com · checked 2026-10-10