Digital Humanities

Knowledge Management

Obsidian allows you to build your own wiki with Markdown; supports Interpage link and link-tracking as well as advanced search and file attachments; also has built-in file manager and PDF viewer.

PDF Reader & OCR

Foxit Reader is my favorite PDF reader. Fast, lightweight, and free; equipped with advanced search functions (e.g. folder search and search & highlight) and split view (so you can read two parts of the document at once, such as main text and end notes). For OCR and other advanced features, it costs only $5 per year for students & educators.

Xodo PDF is touchscreen friendly, smooth operation, and also free, with support for pen and touch as well as basic page manipulations (rotation, rearranging, deletion, etc.), but the app is a bit more unstable than Adobe Acrobat or Foxit.

PDF-XChange Editor is a free PDF reader and also the only easy-to-use and reliable free OCR option that I can find.

Tesseract is an open-source OCR option for the more technically inclined. See this article to get started. See also OCRmyPDF as a more accessible tool using Tesseract and pytesseract for an example of Python wrapper.