PhotoPad Image Editor (PhotoPad for short) is a super compact digital image editing tool developed by NCH Software, whose SoundTap Streaming Audio Recorder and VideoPad Video Editor you may still remember them.
GiliSoft Video Editor is a very simplely designed and easy to use video editing software with rich and popular features, which is especially famous as video cutter (or called splitter) and video joiner (or called merger). It supports almost all video formats (including mobile platform, traditional and network video formats).
PSD (Photoshop Document), AI (Adobe Illustrator), EPS (Encapsulated PostScript) are all the graphics file formats created by Adobe Systems company, used for Adobe Photoshop and Adobe Illustrator. They store layers, channels, reference lines, annotations, color modes and other information added by Photoshop/Illustrator. Although, we can also use ACDSee such as this universal image viewer, that way is not fast and convenient enough.