TAO Translator uses available online translation services to provide translations. Currently supported services: Google Translate (supports translation, language detection, dictionary, and reverse translations for single words); Microsoft Translator, a.k.a. Bing Translator (supports translation only); Yandex.Translate (supports translation and language detection); and Yandex.Dictionaries (supports dictionary with synonyms and reverse translations). More services are possible in the future.
BookONO eBook Manager is an e-book manager and convertor designed as a compliment to Calibre. It is not a rewrite of Calibre, but instead an alternative product which makes some different design decisions. It uses Calibre to do a lot of the heavy lifting, so despite being an independent application, it is considered complimentary to Calibre.
Subtivals provides project subtitles for cinema festivals. Hard copies for film festivals do not always carry subtitles, especially for the hard-of-hearing. Subtivals' goals are the projection and the control of subtitles superimposed on a cinema screen. Projecting subtitles on top of another screen is called soft-titling, surtitling, supertitling, or even sometimes electronic subtitles or virtual subtitles.