JetBrains Omea Reader 2.2
Free and easy to use RSS reader, NNTP news reader, and web bookmark manager. It's fast, it aggregates, and it keeps you organized. Check out the additional features: lightning-fast desktop search, flexible information organizer, contextual access, and quick extensibility for developers who want more.
Very nice reader, unfortunately for Windows, written in .NET.
- search queries can be constructed using various advanced conditions
- search results can be converted to a view meaning that there is a special node in the tree view which performs a live search each time it is selected - cool if you want to keep track of items that meet specific conditions etc.
- very fast, showing a folder containing several thousand items takes very little time
- after updating the feeds, text indexing occurs - very resource consuming task, but allows for very efficient searching later