Nimbalyst vs Backgrind: kanban workspace or overlay?

The facts, side by side

What Nimbalyst does better

Nimbalyst's bet is that agent work needs a thinking surface, and it delivers one: the Session Kanban puts every agent session on a board by phase, the File Edits Sidebar shows exactly what each session touched, and the same window holds a genuinely large set of visual editors — markdown, CSV, mockups, Excalidraw, data models, Mermaid, browser preview, spreadsheets, mind maps. If your workflow is "plan visually, then dispatch agents, then review," nothing else in this niche comes close. Backgrind has no kanban and no visual editors — our Fleet board is a live status grid, and the in-overlay IDE is deliberately minimal.

It's also the openness winner: free for individual users with no feature limits, desktop and iOS apps MIT-licensed, code on GitHub, bring your own model auth. It runs on Linux, which Backgrind currently doesn't (macOS + Windows, Linux marked "coming soon" on our download section). And the native iOS companion — live session view, transcripts, diffs, approvals — is a real, shipped answer to "check on my agents from the couch."

What Backgrind does better

Everything Nimbalyst does assumes the Nimbalyst window has your attention. Backgrind is built for the moment it doesn't: the terminal floats always-on-top over your editor, browser, docs, or a borderless-fullscreen game, and only interrupts when an agent needs a yes/no or finishes. Ghost mode makes it click-through — a game underneath gets your inputs while a "needs you" toast stays tappable. Approvals compound via the policy engine: "Always allow" becomes a rule scoped to repo · tool · command with an audit trail, so the overlay interrupts you less every day.

Phone-wise the trade is honest in both directions: Nimbalyst's iOS app is native; Backgrind's Live mode works in any browser on any phone with an end-to-end-encrypted, desktop-initiated pairing — nothing to install, no account on the relay. And two things have no Nimbalyst equivalent at all: the Fusion council, which asks your own Claude/Codex/Gemini CLIs (read-only in your repo) plus any OpenRouter model on your key one hard question and has a chairman judge a single verdict; and hosted Grindy (Pro), a full agent with no CLI install and no API key for the days you don't want to manage auth at all.

Or run both

These two overlap the most of any pair in our hub — both are session GUIs — so "run both" is a workflow split, not a stack: Nimbalyst when you're actively planning and reviewing at the desk; Backgrind when the agents should keep grinding while you're anywhere else. If you're picking one, decide by where your hours actually go. Mostly at the desk, planning-heavy → Nimbalyst. Mostly away, interruption-driven → Backgrind.