From Reinvented Software:
Keep It is for writing notes, keeping web links and documents, and finding them again on Mac, iPhone and iPad. Keep It is the destination for all those things you want to put somewhere, confident you will find them again later. Keep It is the successor to Together. Keep It has been developed from scratch, preserving the best of Together, but recast in full knowledge of where we are now, and ready for the years ahead. Save web links to Keep It, view them in the app, open them in your browser, or save them as PDFs for offline reading. Any kind of file can be added to Keep It or saved to its folders, and opened for editing in their original applications. With iCloud, changes are automatically made available across all your Macs and iOS devices. Keep It generates thumbnails and summaries for most files, can edit its own notes, rich and plain text files, and show previews for PDFs, images, web pages and most other documents. In compact mode, Keep It for Mac becomes a single column, ideal for using alongside other apps or in split screen. Pretty much anything can be dragged to Keep It, and you can also add things from a variety of apps with Keep It's share extension.