Wandora has support for extracting information from files and web sources in RIS bibliography reference format. The extractor starts with menu option File > Extract > Bibliographical > RIS extractor.... The extractor has a file and URL open dialog and also supports dropping files and URLs into the Wandora main screen. The parser is fairly robust and can ignore text around and between individual entries. Most of the standard RIS tags are supported, and also some extra information can be searched for in miscellaneous tags such as Digital object identifiers.
Extraction is by default done using UTF-8 encoding. This might fail if the file is not valid UTF-8, and the default encoding can be changed by ctrl-clicking the RIS extractor to open the configuration dialog.