niloy.red is Sajjad Ahmed Niloy’s personal collection of web experiments and tools, covering algorithm visualizations, physics simulations, machine-learning sketches, teaching materials, and browser extensions. It is not a developer platform in the traditional sense; it is closer to a personal project site for learning, demos, and lightweight productivity use cases.
The site’s visualization projects include minimum spanning trees, leaf ordering, the Lorenz Attractor, longest common subsequence, gradient descent, Brownian motion, and more. They are well suited to turning abstract algorithms and mathematical concepts into interactive demos. The technology stack page explicitly mentions JavaScript, Three.js, p5.js, WebGL, and ML.
The tools section is more directly relevant to everyday developer workflows. JpyLens is a browser extension that can open, render, and edit .ipynb files directly, without Python, Jupyter Server, or a kernel. It supports Markdown, Python syntax highlighting, HTML tables, images, SVG, and ANSI tracebacks, and emphasizes local processing, offline availability, and no telemetry. Video Speed Controller Pro targets HTML5 video, supporting speeds from 0.25x to 4.00x, a global default speed, per-site overrides, and instant changes.
Several pages state that the extensions are free, and there is no visible subscription, enterprise plan, or paid feature tier. The site provides GitHub links, and Video Speed Controller Pro explicitly has a “Source on GitHub” link. However, the text does not specify open-source licenses for all tools, so it should not be assumed that everything is open source.
The strengths are that it is lightweight, privacy-friendly, and clearly positioned. JpyLens is practical for users who only need to quickly review Notebook files, and the algorithm visualizations are useful for teaching. The limitations are also clear: JpyLens cannot execute code, and can only render saved outputs and edit source; overall, the site lacks APIs, SDKs, enterprise support, systematic documentation, and an SLA.
It is suitable for students, teachers, algorithm learners, Notebook reviewers, and users who need simple browser-based productivity tools. It is less suitable for scenarios requiring team collaboration, a code execution environment, permission management, or enterprise-grade support. The text does not provide information about access from China. In addition, installation channels such as the Chrome Web Store and Firefox Add-ons may be affected by local network conditions in China. Alternatives to consider include JupyterLab, the VS Code Jupyter extension, nbviewer, or other video speed-control extensions.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on niloy.red official site.
niloy.red is an Bangladesh Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach niloy.red directly.