I build software for companies whose staff work at their clients' sites.
CTL Studio is my one-person software studio in Johor, Malaysia. My first product is OpenRoster: worker records and contracts today, rostering next.
OpenRoster
Security guards, cleaners and other site staff are often managed with spreadsheets, chat groups and paper contracts. OpenRoster puts them in one place: each worker's records and documents, the clients and sites they go to, and contracts they sign online.
It is in early access now. Rostering, the part shown above, is what I am building next.
Work with me
I also build custom software for other businesses, on site in Johor or remotely.
Web and mobile apps, internal systems, customer portals and SaaS products. I handle the whole job myself, from planning through launch and support.
- Custom software
- Web development and design
- iOS and Android apps
- SaaS products
- Databases
- IT consulting
Before CTL Studio I built software for teams and clients in Malaysia and Singapore, including identity verification (eKYC), an e-commerce marketplace with mobile apps, and loyalty programs. Past work is at liewchentong.com.
Company details
CTL Studio is registered with the Companies Commission of Malaysia (SSM) as a sole proprietorship. I run it myself. My background and earlier work are at liewchentong.com.
- Legal name
- Liew Chen Tong, trading as CTL Studio
- SSM registration
- 202603269827 (PG0594604-U)
- Registered
- 9 October 2026
- Location
- Johor, Malaysia
- Contact
- liewchentong@ctlstudio.dev
- linkedin.com/company/ctlstudio