Koha vs Virtua

Koha is a free library management system for single-branch and multi-branch libraries, as well as consortia. It brings together acquisitions, circulation, cataloging, serials management, authorities, reporting, label printing, notices, and offline circulation. The system is multilingual and translatable, with additional languages made available over time. Its catalog can use content from Amazon, Google, LibraryThing, Open Library, Syndetics, and other sources.

Koha's web-based public catalog, circulation, management, and self-checkout interfaces use XHTML, CSS, and JavaScript. It supports standards and protocols including MARC 21, UNIMARC, z39.50, SRU/SW, SIP2, and SIP/NCIP. The software is distributed under GNU GPL version 3 or later. The project recommends a Linux server and lists Debian, Apache, MariaDB or MySQL, Perl, and root access among immediate-use installation requirements. Packages are available for modern Debian-based distributions, and the project prefers packages where feasible. Libraries can support the system themselves or obtain help from support companies.

Virtua has no write-up on Specifiction yet; its figures are above.