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CheckIO vs MarkReader

A side-by-side look at CheckIO and MarkReader. For an in-depth review of either product, follow the links below.

CheckIO

CheckIO

Education & Reference

CheckIO is an online platform for learning and practicing programming through solving code challenges. It provides bite-sized coding puzzles of increasing difficulty that allow users to improve their coding skills in Python and JavaScript.

pythonjavascriptcoding-challenges
MarkReader

MarkReader

Office & Productivity

MarkReader is a free, open-source document viewer and annotation tool. It allows users to view PDFs, Word docs, PPTs and more while adding highlights, notes, bookmarks and annotations. Useful for reviewing documents, collaborating with others, and organizing research.

pdfviewerannotationhighlightsnotesbookmarkscollaborationresearch

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