QuillBot
QuillBot is a long-standing paraphrasing tool with multiple modes and a summarizer. It suits students and general writers who want several rewrite variants. Trade-off: mode quality varies, and you still check fidelity and originality yourself.
Wordtune
Wordtune focuses on rewriting and tone/length suggestions inside your writing flow. It suits people editing as they write. Trade-off: it is more of a sentence-level assistant than a batch originality tool.
Built-in editors and "rewrite" buttons
Many writing apps now ship a rewrite feature. Convenient, but tone and originality control are usually shallow, and batch limits are tight.
Where Paraphraser AI fits
Paraphraser AI centers on rewriting without losing meaning, with tone presets (Formal, Casual, Concise, Friendly), a "terms to keep" field, and batch of up to 5 paragraphs. It is in pre-launch — join the waitlist; pricing starts at a free tier and a $9/mo Pro tier. No tool here guarantees a plagiarism-free result; you remain responsible for the final text.
Authoritative references
- Purdue OWL — paraphrasing: https://owl.purdue.edu/owl/research_and_citation/using_research/quoting_paraphrasing/index.html
- University of Toronto — how to avoid plagiarism: https://writing.utoronto.ca/advice/using-sources/how-to-avoid-plagiarism/
- APA Style — paraphrasing: https://apastyle.apa.org/style-grammar-guidelines/citations/paraphrasing