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Up to three tools. The table shows the data as-is, without picking a “best”.
| Field | D2 | Backlog.md | Hurl |
|---|---|---|---|
| Platforms | Universal | Universal, Codex, Claude Code, Cursor | Universal |
| Local support | Yes | Yes | Yes |
| Paid API | No | No | No |
| License | MPL-2.0 | MIT | Apache-2.0 |
| Stars | 25761 | 7203 | 19288 |
| Last activity | October 11, 2026 | — | October 17, 2026 |
| Install complexity | Easy with a supported package manager; Homebrew must already be installed for this command. Official binaries, Windows, Linux, and source options are documented. | Easy — npm, Bun, Homebrew, or Nix | Easy; API and CLI knowledge required |
| Category | Workflow, UI | Multi-Agent, Git, Workflow | Testing, DevOps |
| Best use | For developers and small teams that want architecture and data-flow diagrams close to the repository and reviewable as text. Use it when relationships matter more than pixel-perfect placement; not for free-form marketing design or exact manual positioning. | Best for an individual developer or small team using coding agents and wanting to review the specification and plan before code. It keeps tasks, acceptance criteria, and decisions inside the project and exposes them through CLI, a local browser, or MCP. It is not a replacement for a centralized enterprise SaaS board with organization-wide permissions and reporting. | Best for a developer or small team that wants repeatable API checks with explicit conditions stored beside the code. It links request data and identifies failing assertions without repeating manual inspection. It does not replace browser tests or test-environment setup; curl may be enough for a one-off request. |