New Relic is an observability platform for engineers to monitor, debug, and improve their entire stack.

Sentry is an application performance monitoring & error tracking software for developers & software teams.

regex101 is an online tool for building, testing, and debugging regular expressions with support for multiple programming language flavors.

Paul Irish is a developer focused on making the web great, specializing in front-end performance, tooling, and Chrome DevTools.

Insomnia is an API development platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets.

ApiDog is an API development and testing platform for developers and QA teams, offering features like API documentation, debugging, and mock servers.

mitmproxy is an interactive HTTPS proxy for debugging and testing

Luciq is an agentic AI platform for mobile observability that automates the detection, diagnosis, and resolution of app quality issues to improve user experience and business outcomes.

Impressive Webs provides articles and tutorials covering front-end web development, focusing on CSS, JavaScript, debugging, and coding tools for developers.

WP Reset is a WordPress development and debugging tool that allows non-devs to quickly reset, restore, and clean WordPress installations with one click.

Middleware is a cloud observability platform that revolutionizes issue debugging for dev and ops teams by providing a unified view of metrics, logs, traces, and events with AI-driven insights for improved infrastructure and application performance.

Langfuse is an open-source LLM engineering platform offering traces, evals, prompt management, and metrics to debug and improve LLM applications.

RegexBuddy is a desktop tool for learning, creating, understanding, testing, and debugging regular expressions across various programming languages.

Kilian Valkhof is a front-end and UX developer who builds tools like Polypane, a browser specifically designed for responsive web development and design.

Regexper is a free online tool that visualizes regular expressions using clear and intuitive railroad diagrams for easy understanding and debugging.

Lightrun is a developer observability platform for securely and dynamically instrumenting logs, metrics, and traces in live production applications to reduce MTTR.

Restack is a backend framework for engineers to build, launch, and scale accurate and reliable autonomous AI agents and long-running workflows.

Our Code World is a technology blog providing interesting articles, solutions, and free online developer tools for daily development life, focusing on frameworks like Laravel and Vue.js.

Helicone is an open-source platform for logging, monitoring, and debugging LLM applications.

RegexPlanet is an online tool for testing and debugging regular expressions across various programming languages like Python, Java, Go, and Node.js.

Pythex is a real-time Python regular expression editor that runs entirely in the browser for quick regex testing and debugging.

Cocoacasts is an online learning platform offering in-depth tutorials and courses for developers to master Swift, SwiftUI, and Apple development technologies.

Shake is a bug and crash reporting tool for mobile apps and websites.