Visualizing and understanding PostgreSQL EXPLAIN plans made easy.

A VueJS component to show a graphical vizualization of a PostgreSQL execution plan.

• PostgreSQL execution plan visualizer 2 @ GitHub.

The Ruby Linter/Formatter that Serves and Protects.

RuboCop is a Ruby code style checker (linter) and formatter based on the community-driven Ruby Style Guide.

• RuboCob @ GitHub.

Related contents:

• 300 Days of RuboCop @ Lovro Bikić.

Pi is a minimal terminal coding harness. Adapt pi to your workflows, not the other way around, without having to fork and modify pi internals. Extend it with TypeScript Extensions, Skills, Prompt Templates, and Themes. Put your extensions, skills, prompt templates, and themes in Pi Packages and share them with others via npm or git.

• Pi Coding Agent @ GitHub.

Related contents:

• What I learned building an opinionated and minimal coding agent @ Mario Zechner.
• 🦞 CRACKING THE CLAW @ CTO Lunch NYC.
• Pi: The Minimal Agent Within OpenClaw @ Armin Ronacher's Thoughts and Writings.
• Pi: Open-Source AI Agent Terminal Set-Up @ Christian Lempa's YouTube.
• Pi’s Minimalism Is Its Advantage @ Earendil.

Let agents test your code in a real browser.

One command scans your unstaged changes or branch diff, then generates a test plan, and runs it against a live browser.

Expect reads your unstaged changes or branch diff, sends them to an AI agent (Claude Code or Codex CLI), and generates a step-by-step test plan describing how to validate the changes. You review and approve the plan in an interactive TUI, then the agent executes each step against a live browser - using your real login sessions so there's no manual auth setup. Every session is recorded so you can replay exactly what happened.

• Expect @ GitHub.

Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path.

You test your app to make sure it works as intended. But what if the APIs you use fail? Will your app lose your customer's data? How do you test for this? Simulating API failures is hard. You end up writing code that you won't be shipping or worse: not testing at all. That's why we built Dev Proxy, to simulate API errors so that you can easily test your app without changing your code.

• Dev Proxy @ GitHub.
• DevProxy 0.22 Improves API Permission Checks @ InfoQ.

Testing TLS/SSL encryption anywhere on any port .

testssl.sh is a free command line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.

• testssl.sh @ GitHub.

Related contents:

• Testssl.sh : auditer la configuration SSL/TLS de vos serveurs Web @ IT-Connect :fr:.

Cross Site "Scripter" is an automatic -framework- to detect, exploit and report XSS vulnerabilities in web-based applications.