Encapsulated PostScript (.EPS)
Encapsulated PostScript (EPS) is a DSC-conforming PostScript document with additional restrictions which is intended to be usable as a graphics file format. In other words, EPS files are more-or-less self-contained, reasonably predictable PostScript documents that describe an image or drawing and can be placed within another PostScript document. Simply, an EPS file is a PostScript program, saved as a single file that includes a low-resolution preview “encapsulated” inside of it, allowing some programs to display a preview on the screen. Read more on Wikipedia
Adobe Illustrator Artwork (.AI)
Adobe Illustrator Artwork (AI) is a proprietary file format developed by Adobe Systems for representing single-page vector-based drawings in either the EPS or PDF formats. The .ai filename extension is used by Adobe Illustrator.
The AI file format was originally a native format called PGF. PDF compatibility is achieved by embedding a complete copy of the PGF data within the saved PDF format file. This format is not related to .pgf using the same name Progressive Graphics Format. Read more on Wikipedia
RECOMMENDED SOFTWARE: Adobe Illustrator
Scalable Vector Graphics (.SVG)
Scalable Vector Graphics (SVG) is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. The SVG specification is an open standard developed by the World Wide Web Consortium (W3C) since 1999.
SVG images and their behaviors are defined in XML text files. This means that they can be searched, indexed, scripted, and compressed. As XML files, SVG images can be created and edited with any text editor, but are more often created with drawing software.
All major modern web browsers—including Mozilla Firefox, Internet Explorer, Google Chrome, Opera, and Safari—have at least some degree of SVG rendering support. Read more on Wikipedia
CDR is a file extension for a vector graphics file used by Corel Draw, a popular graphics design program. Corel Paint Shop Pro and Adobe illustrator 9 and later can also open some CDR files. Read more on Wikipedia
RECOMMENDED SOFTWARE: CorelDRAW