Apps similar to SubRip include VideoSubFinder, which is free and open source. Other options are CCExtractor and DVDSubEdit. In total there are three Subtitle Editors like SubRip for Windows, Linux and Mac.
VideoSubFinder allows you to create subtitles files with timing by finding video images with the text (using algorithms of digital image processing). Using text mining algorithms it separates the text of any color from images.
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A tool that analyzes video files and produces independent subtitle files from the closed captions data. CCExtractor is portable, small, and very fast.
DVDSubEdit allows you to visualize and make modifications to subpics (subtitles or button highlights in menus) directly inside VOB video files without the need to demux and remux the subpic stream. It can also extract subtitles to a SubRip formatted (.srt) file.
