Biblical software or Bible software is a group of computer applications designed to read, study and in some cases discuss biblical texts and concepts. Biblical software programs are similar to e-book readers in that they include digitally formatted books, may be used to display a wide variety of inspirational books and Bibles, and can be used on portable computers. However, biblical software is geared more toward word and phrase searches, accessing study bible notes and commentaries, referencing various modern translations, cross-referencing similar passages and topics, biblical dictionaries, original language texts and language tools, maps, charts, and other e-books deemed relevant to understanding texts from a philological approach. Bible software varies in complexity and depth, depending on the needs of users, just as the purposes of the users vary from devotional reading and personal study to lesson and sermon preparation, inspirational publishing and even further research tools and translations. Basic Bible software is typically aimed at mobile phones, and is designed to simply display the text of a single Bible translation, with word and phrase searches as the only available tool. More advanced packages run on personal computers and boast far more features, display a wider variety of theological resources (see above), and may offer features such as synopses and harmonies of the Gospel narratives, morphological and syntactical searches of original texts, sentence diagramming, user notes, manual and dynamic highlighting, lectionary viewers, etc.