FreeChemDraw
Free Online Chemical Structure Editor
Hi there! I'm Felix !👋
A programmer born in the 80s, passionate about computers, hardware, and internet technology.
I’ve been involved in software development and project management for many years.
Now based in Osaka, I focus on software development and internet services.
Here on my blog, I share my thoughts on technology, development, and life as an entrepreneur in Japan.
Thanks for visiting!
What I Do
Personal Projects
ChemExpoHub
Global Chemical Exhibition Directory
DevAIOHub
CMMI Level 3 All-in-One Developer Tools
ChemToolsHub
Free Online Chemistry Tools Platform
FamilyFunHub
Educational Gaming Platform - Free Educational Family Games Platform
My Blog
Sharing tech, daily life, and entrepreneurial insights.
2025.10.18
FreeChemDraw — Free Online Chemical Structure Editor & Auto Structure Fetch
FreeChemDraw is a free online chemical structure editor based on open-source Ketcher and OSRA; integrates with ChemTradeHub to fetch structures by CAS, formula or name.
4765 views
2025.10.15
.NET Project Publish: Dynamic File Exclusion or Inclusion by Client
This article explains how to dynamically exclude or include files in a .NET project during publishing based on client parameters, enabling customized releases for multiple client websites.
1824 views
2025.10.13
Introduction to MSites: The Intelligent Website Builder for Enterprises
MSites is an intelligent website building system developed by MetaLink Inc., designed to help companies quickly create modern, high-quality corporate websites at low cost. With modular design, multilingual content management, built-in SEO, and responsive dark mode, MSites enables efficient global digital expansion for businesses.
1685 views
2025.03.03
Free Backlink Submission Sites for New Websites – DevAIOHub.com DR Reaches 7 on Second Day
DevAIOHub.com saw its DR rise to 7 on the second day after launch. The author summarizes the steps taken post-launch, including adding Google Search Console and Bing Webmaster, submitting to Product Hunt and fazier.com, posting on v2ex.com, publishing on Startup Fame and Peerlist, adding reciprocal links, and adding links in the footer of other websites.
3098 views
2025.03.01
My New Toy Is Live! DevAIOHub – The All-in-One Developer Tool Hub
DevAIOHub is an all-in-one tool navigation site inspired by CMMI Level 3 process management, designed to help developers manage the entire development workflow more efficiently. The site categorizes tools according to CMMI Level 3 principles, covering hundreds of open-source and commercial tools. Each tool includes an official link and description, with functional tags for easy filtering. The site also features a navigation function to find tools by development process. After launch, the author hopes it becomes a handy assistant for developers.
2130 views
2025.02.22
Unlock the Potential of the Chemical Properties Calculator
The Chemical Properties Calculator is a free, online tool designed to simplify chemical calculations. It offers features such as density calculation, molarity and molality, molecular weight, and additional properties like LogP and TPSA. This tool is essential for anyone engaged in chemical analysis, whether in a lab, classroom, or home setting. It accepts inputs in the form of chemical formulas or names and provides quick, accurate results, making it a valuable resource for both educational purposes and professional research.
1825 views