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Want to explain some client-side code or server-side project? We made it happen. Say "Hi" to CodePicnic. Your neighborhood platform for sharing and running code in the browser. | Analyze your website speed and performance based on performance best practices and timing metrics. You can run it using Docker, test your site in Chrome and Firefox and graph the metrics in Grafana. |
Full Back-end Consoles - From a Linux shell to a Express.js app. Create consoles with Ruby, Python, PHP or Node.js. If it runs on GNU/Linux, we can handle.;Embeddable servers - Use your consoles inside your site, Tumblr blog or Medium. Let those text-only tutorials in the past.;Shareable - Everyone gets their own console copy! Safe and secure to play around, mess with and even export it to Github. | Performance dashboard;Performance budget;Real browsers;Speed Index;Chrome;Firefox;WebPageTest |
Statistics | |
GitHub Stars - | GitHub Stars 4.9K |
GitHub Forks - | GitHub Forks 615 |
Stacks 3 | Stacks 41 |
Followers 12 | Followers 82 |
Votes 2 | Votes 0 |
Pros & Cons | |
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QonQrete is a local-first, agentic AI orchestration system designed for secure, observable, and human-in-the-loop software construction. It coordinates autonomous AI agents to plan, execute, and review code generation — all within an isolated sandbox environment on your own infrastructure. Think of it like a local-first, agentic AI “construction yard” that plans, writes, reviews, and version-controls your code inside a safe sandbox on your own machine.

Complete SEO audits in 60 seconds. Automated crawling, PageSpeed analysis, and prioritized fixes.

H2Fi is a free, all-in-one SEO Audit Tool that helps you analyze your website’s complete performance. It audits GA4 data, Google Search Console insights, Google Business Profile visibility, and all major On-Page SEO factors to show you exactly what your site needs to improve.H2Fi scans your site for technical issues, on-page SEO, speed, mobile performance, indexing, and Core Web Vitals. Using GA4 and GSC insights, it highlights opportunities and gives clear recommendations to improve rankings — completely free.

It is an open-source, automated tool for measuring the quality of web pages. It can be run against any web page, public or requiring authentication. It has audits for performance, accessibility and search engine optimization of web pages. It also includes the ability to test progressive web applications for compliance with standards and best practices.

Coder moves developer workspaces to your cloud and centralizes their creation and management. With Coder, developers can get up and running on new projects right away and stay in flow using their preferred IDE and tools.
Runnable saves time and frustration caused by development pipeline and the staging server by providing full-stack environments for every code branch, and any application.

It is an all-in-one performance optimization service. It helps ecommerce, content publishers and web agencies achieve outstanding website speed optimization results.

Free test tools to check whether specific components of your website or server are operating properly, and to find out what your end-users are experiencing at any given time.

It is an on-premise web crawler tool designed to help users scan websites for broken links, monitor search engine optimization (SEO) parameters and check technical configuration for errors. The platform comes with page title and meta tags analysis functionality, which lets professionals modify headlines and page descriptions to improve online indexing.

Compare the display of your web design no matter the operating system, browser, and its version. Check your site for any visual bugs. Make complicated web testing easy.