Free / Open-Source Windows Software
Donald James Company offers free and open-source Windows software — tools and utilities you can download at no cost, use freely, and explore at the source level. Source code for every title is publicly available on GitHub.
Free / Open Source Releases
Browse the available free and open-source Windows titles below. Click any app for full details, downloads, and documentation.
DBF to CSV/TSV 1.1.6 (DJ-DBF2CSV)
Version 1.1.6 — Available Now
A portable Windows utility that bulk-converts dBASE / FoxPro / Visual FoxPro (.DBF) files to CSV or TSV format in a single pass. Built with .NET 9 and WPF — no installer, no registry entries, no admin rights needed. Just download and run.
Details & Download
MS SQL to MariaDB 2.1.3 (Dj-MsSql2Maria)
Version 2.1.3 — Available Now
Convert MS SQL Server .SQL scripts, .BAK backup files, or .CSV data files into MariaDB-compatible SQL. A portable Windows utility built with .NET 9 and WPF — no installer, no SQL Server required. Just download and run.
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