Manage your library resources with SLS


Live Demo

BIBFRAME Linked Data

We are adding BIBFRAME Editor and linked data capabity to SLSCloud. Read this presentation for an introduction of library linked data.


BIBFRAME linked data is stored in the build-in triplestore and is available for SPARQL querying.

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About SLS

SLS is a library management system developed since 1991 (see its early history and an historical image of the DOS version of OPAC released in 1992). It is specially designed for small sized libraries, including school, special, and church libraries. It has everything you need to get your library running smoothly and effectively. You can install the system either on a standalone computer, hosted locally within your institution or on the service provider's data center.

Download SLSCloud information brochure


SLS Software is currently distributed through TR Computer Limited. They can be reached by calling (852) 2772-1619 or sending email to


SLS announces the release of SLSCloud OPAC Version 5.3.2 (2020-01-12)

Several enhancements and updates are added to this December 2019 release, together with the software refreshed to support the latest version of WordPress.

SLS announces the release of SLSCloud OPAC and SLS Software Version 7.0 (2015-11-22)

SLSCloud OPAC is now in general release. Apart from having a completely new look and a fully mobile device responsive design, a number of features are introduced. With the new Login and My Account functions, patrons can directly view their own circulation activities, reserve items and renew their borrowed books. Users can toggle the display in both English and Chinese language at anytime they want. Search results are automatically populated with book cover images. Any many more...

We have also refreshed the SLS Software (i.e. all Windows and Web modules) and have released it as Version 7.