There is, but you will need two programs. What I found very useful from OneNote is the ability to upload powerpoints, PDFs, docs, images, etc and type text on them directly, and use my stylus (touch pen) to write and draw diagrams directly on the files. I also liked the organization and search function of OneNote. To have these functions on Ubuntu, install Xournal if you want to use a touch pen (or point cursor) to draw/write on your files (export your powerpoint as PDF before opening with Xournal), then export your Xournal file as PDF, and install Mendeley to organize all your PDFs. Unlike OneNote, in Mendeley, you can direct select text, copy text, and click on links directly from the PDF files in Mendely. If you simply want to take notes and organize them, install EverPad. With Mendely, you can also search text in all of your files. You can sync Mendeley to all other devices and open them online after you create a free online account.