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Spec Kitty: Spec-Driven Development for serious software developers. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Spec Kitty. This is an automatic list. We have not written a researched verdict for Spec Kitty yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Spec-driven, agentic workflow framework for AI coding agents.
OSpec is a document driven workflow for working with AI coding agents. It ships as an npm command line package from clawplays, run as the ospec command, installed globally with npm. The project states plainly that it is not OpenSpec. The idea is to keep requirements, progress and closeout in the repository instead of o...
One person, one software company.
AgentHub is an open source Electron desktop app that organises Claude Code agents into a virtual software company run by one person. It ships with 47 specialised agent roles across nine departments, including product, engineering, design, marketing, QA, project management and operations, and manages their sprints, task...
Live messaging for coding agents
Concord is an open source MCP server that gives coding agents a shared work state so they can coordinate before their changes collide. Installed from npm and run locally against a repository, it lets agents such as Claude Code, Codex and Cursor see who is working on what, reserve the files or scope they intend to edit,...
Your feedback loop with the agent
Crit is a local review tool for the output of AI coding agents. Instead of scrolling through terminal diffs after an agent has touched a dozen files, you open the changes in a browser, click a specific line, type what is wrong, and hand the comments back to the agent. When the agent edits the work, Crit reloads with a ...
The memory layer for AI-native development - giving AI persistent understanding of your software projects.
Knowns is open source project memory for AI coding assistants and the teams that use them. It keeps a project's tasks, docs, decisions and patterns linked and searchable inside the repository, so that agents and people work from the same state instead of relying on an ungrounded guess. It is local first, with no hoste...
mission control for agent skills
LazySkills is a terminal user interface for managing agent skills, the packaged instruction folders that coding agents load to learn specialized tasks. It presents every skill installed on a machine on one screen, grouped by the source it came from, whether project, global, universal or specific to a single agent. The...