Having a professional editor in your corner is priceless. They’ll see things that no software program ever could. Still, it’s good to have a book editing software program on hand to help your editor concentrate on the more advanced parts of your writing. Running your draft through a good editing program is like tidying your home before the cleaner shows up. This way, you get much more value out of the work that truly matters.
If it has been awhile since you browsed book editing software, you’ll be glad to know that technology has moved well beyond glorified spell checkers. Today’s book editing software can highlight overused words, unclear sentences, pacing issues, and even story-level flaws. Some are backed by AI and act more like a coach by showing you where you can tighten up what. Others focus on a deeper technical polish, and some can even connect you with human editors if you need something more than what they provide by default.
Here are a few top editing software picks to choose from in 2025 and beyond.
Table of Contents:
• SudoWrite
• Claude Pro
• Grammarly (with AI agents)
• Fictionary
• ProWritingAid
• Hemingway Editor
• Bringing it all together with BookBaby
SudoWrite
SudoWrite is like an AI-powered fiction sidekick. It can help you brainstorm, rewrite clunky dialogue, and expand on thin scenes. If you’re reluctant to use AI to help put your idea into words, you’ll be glad to know that SudoWrite sounds and feels natural when it offers suggestions — not cold and robotic like many AI text generators. For example, you can ask it to “make this more vivid” or “add more suspense” and it gives you possible choices, not strict rules.
SudoWrite starts at around $10/month with higher pricing for heavier use. If you’d like a helpful editing companion that makes light suggestions rather than deep rewrites, this one’s for you.
Claude Pro
Anthropic’s Claude can hold your entire novel draft in its memory (up to 150,000 words), which is excellent for maintaining consistency and voice while making sure your opening ties back with your ending. Claude may not zero-in on your comma splices, but it will give you overall feedback. Think of it like a plot check at scale.
Claude Pro costs $20 per month at its middle tier plan.
Grammarly (with AI agents)
Grammarly is the grammar and style checker we all know about, and it deserves a place on this list for being outstanding at those things, but its new AI agents add a whole fresh layer. These agents can adjust the tone of your writing, rewrite entire passages, and even explain in plain English why a suggestion is important (rather than just making blanket changes to your writing without your input).
It also works across your favorite word processor program or platform, including Google Docs, Microsoft Word, email, and even browsers. It’s free for the basics, but the Pro plan costs $12/month and is billed yearly.
Fictionary
When you need big-picture editing, Fictionary is unmatched. Not only can it visualize your story arc, pacing, character traits, and scene, but it can also show you where momentum slows or the point of view drifts. Think of SudoWrite as your scene coach, but Fictionary as your structural pro.
The service is available with a 7-day free trial and then costs $19/month. If you want to tighten your narrative structure, there’s a reason why this tool leads the pack.
ProWritingAid
ProWritingAid provides both detailed reports and deeper learning. For those writers who want thorough feedback that teaches you while it gives you suggestions, ProWritingAid was made for you. It can run over 20 different reports, checking everything from pacing to sentence structure. It also explains why those changes matter, so that you improve as a writer.
ProWritingAid is also integrated with Google Docs. The basic version is free, while the premium version is available for $120/year or $399 for a lifetime license.
You can learn more about ProWritingAid in this replay of a recent webinar with BookBaby.
Hemingway Editor
Hemingway Editor is still the go-to for authors who tend to overwrite. Its entire reason for existing is to highlight long, meandering sentences, passive voice, and overuse of adverbs. It’s not as fancy as some of the AI tools featured here, but it gets the job done and forces you to get clear — fast.
Hemingway is available as a free service from the browser, or a $19.99 one-time fee as a desktop program.
Bringing it all together with BookBaby
As you can see, no one single book editing software program or website is the complete “all in one” editing package. Instead of looking for a full editing package, think of editing your book in layers.
For example, use a tool like Grammarly or ProWritingAid for language cleanup. Rely on SudoWrite or Claude for AI-backed rewrites and consistency checks. Use Fictionary if you need some help with your story architecture, and Hemingway if you want to keep readability lean and focused.
After that? It’s time to call in the human professionals: the editing team at BookBaby. Our manuscript editing services include copy and line editing as well as proofreading to get your draft as polished as possible. From there, we also offer comprehensive book formatting, cover design, printing and even marketing services to make sure your book gets the attention it deserves while looking flawless on retail (and online) shelves.
Interested in learning more about writing and editing? Be sure to check out our free guides, including How to Write Your Memoir, The 7 Secrets to Crafting Characters that Captivate, and perhaps most importantly, You’re Not an Editor. You’re Not an Editor, in particular, is invaluable if you’re at this stage in the process, as it gives you four crucial questions you need to ask yourself when choosing the perfect book editor.
By downloading or trying out these different book editing software programs and websites, you’ll be well-positioned to give your book the polishing touches and grammar tweaks it needs before turning it over to a human editor. Be sure to try out the free plans or trials to see how each one works before you buy!
