tagls is a tool that matches file names using boolean expressions made of tags and regular expressions. It handles searching in file lists with word boundaries for "tags", stemming and synonym expansion for both tags and regular expressions, and boolean expressions over lists of tags or regular expressions. It can match against either the file name or the file's content. The output can be unsorted, sorted by name, or sorted by relevance.
PhotoCatalog can import GPS data from various formats such as CSV, GPX, and InstaMapper (in the case of InstaMapper, it is a live stream) and create a Map that is updated live during your travels. It can also import data from Twitter or FourSquare, RSS extract any GPS data they have or supplement them with existing GPS data, and place them on a map as well as keeping a personal archive. It can then import photos via file upload, email, or scanning an existing folder, geotag photos lacking GPS data, sort, rotate, scale, and [losslessly] compress them as necessary and place them on a map. It can also push them to Facebook automatically and fill in a caption and/or comment with them.