BibleWebApp
A free online interlinear Bible that lets you click any Greek word to see its Strong's number, full parsing (part of speech, case, number, gender), all occurrences in the Bible, and a complete definition. Shows the English and Greek text side by side.
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Click to enlarge: BibleWebApp parsing λόγος (logos) in John 1:1
NET Bible
The New English Translation Bible includes a built-in Greek tab that displays the full Greek text. Click any Greek word to see its morphology (parsing code), Strong's number, transliteration, root word, and a detailed definition with all semantic ranges. Over 60,000 translator notes available.
Visit netbible.org →
Click to enlarge: NET Bible parsing λόγος (logos) in John 1:1