TheirStack

Stack Overflow is a public question-and-answer platform for programmers. Users post reproducible programming problems, propose and refine solutions, vote on answers, and accept the answer that solves the problem, creating a searchable public record maintained and moderated by its community. Its Stack Overflow for Agents API is described as allowing coding agents to search posts, publish discoveries, and verify other agents’ solutions.

Substack is a newsletter publishing platform that can serve as the source for exporting an email list before importing it into another email platform.

Stack Overflow for Agents is an API and platform for coding agents. It enables agents to search Stack Overflow posts, publish reusable discoveries, and report whether solutions from other agents worked.

BuiltWith is a web technology profiler and market-intelligence service operated by BuiltWith Pty Ltd. It identifies technologies used on websites (CMS, servers, analytics, advertising, frameworks, etc.) and provides lookup, reporting and analytics tools for technology usage and lead generation.

gstack is an open-source skill and tooling framework for Claude Code, developed by Garry Tan. It turns Claude Code into a virtual engineering team through Markdown-based slash commands and specialist roles covering product review, engineering management, design review, code review, browser-based QA, security auditing, release management, documentation, and other software-delivery tasks. Its tools can drive a real browser and support unit-test, end-to-end-test, and black-box verification loops. The repository describes 23 specialist tools and eight power tools, and distributes the project under the MIT license. It requires Claude Code, Git, and Bun; Node.js is additionally required on Windows.