Chrome Goldmine vs Groundrule

Chrome Goldmine is a complete database of 9,656 expired Chrome extensions, each with revenue estimates, rebuild difficulty scores, competitor analysis, and a step-by-step action plan. Built for indie hackers, solo SaaS builders, and vibe coders, it provides a proven starting point for rebuilding profitable extensions that were delisted due to Google’s Manifest V3 changes. The database includes action plan templates, filtered Notion views, CSV export, and quarterly updates for life.

Best for: Indie hackers, solo SaaS builders, vibe coders looking for profitable ideas.

• Finding profitable Chrome extensions
• Rebuilding expired extensions
• Competitor analysis
• Identifying SaaS opportunities
• Market validation

See the full listing - Chrome Goldmine on ScrollLaunch.

AI agents now write a large share of your code. Your engineering standards didn't come along: they live in wikis, review comments and the heads of a few senior people, and every agent file (AGENTS.md, CLAUDE.md, Cursor rules, Copilot instructions) drifts into its own copy.

Groundrule turns those standards into one rulebook, teaches it to every coding agent, and checks every change against it.

**One rulebook.** Write a standard once: the requirement, why it exists, how to fix a violation, a severity and a stage. Start from curated packs (security baseline, TypeScript/Node, Python, Go, Java/Spring, React, architecture, Docker, Kubernetes, Terraform, GitHub Actions, testing, agent hygiene) and add your own.

**Every agent reads it.** One `groundrule sync` writes AGENTS.md, CLAUDE.md, Cursor rules and Copilot instructions from the same source, and a stop hook plus an MCP server let agents check their own work before they finish.

**Start from what your code already does.** `groundrule scan` reads the rules a repository already keeps (layer boundaries, placement conventions, package gates, imported from your existing docs too) and sends proposals to a review inbox, each with its evidence. Accept, and it's a standard.

**Checked on every pull request.** Deterministic checks run in CI and on commits. Each finding names what failed, which standard, the evidence (file and line) and the fix. Blockers stop the merge; everything else teaches.

**Roll out on evidence.** Every rule moves through observe → teach → advise → enforce, with the data to justify each step. A compliance report shows pass rate, rules in effect, exceptions used and what commits declare about coding agents, exportable as CSV.

The core (CLI, checks, packs, hooks, MCP server) is open source under Apache-2.0 and works with no account. The hosted workspace adds the rulebook, inbox, rollout stages, team and repository settings, and compliance reports. Free for small teams; open-source projects stay free.

Best for: Engineering teams that ship with AI coding agents: platform and staff engineers, tech leads and engineering managers who own code quality, architecture and security standards.

• Standards for coding agents
• AGENTS md generation
• Architecture rule enforcement
• PR compliance checks
• Security baseline enforcement
• Agent file drift detection

See the full listing - Groundrule on ScrollLaunch.