“The DejaVu fonts are a font family based on the Vera Fonts. Its purpose is to provide a wider range of characters while maintaining the original look and feel through the process of collaborative development (see authors), under aFree license.” — DejaVu Wiki

Several designers have contributed to the DejaVu project, but many of the non-Latin glyphs added come from Arev by Tavmjong Bah. Other contributions are listed on the DejaVu wiki.