# Paperpal Alternatives 2027: 11 Paid, Free & Open-Source

Source: https://zekaiwork.com/alternatives/paperpal/
Prices checked: 2026-11-12 (Zekai Price Ledger)

The best Paperpal alternatives in 2027 are Jenni AI (best overall, $12/mo billed yearly), Grammarly (best free plan) and LanguageTool (best open source, LGPL-2.1). Paperpal itself starts at $12/mo billed yearly. Zekai checked these prices on vendor pages on 12 Nov 2026; 8 more are compared below, including 4 with a free plan and 2 open source.

| Tool | Type | Starting price | Free plan limit | Licence | Best for | Price checked | Links |
|---|---|---|---|---|---|---|---|
| Paperpal (the tool being replaced) | — | $12/mo billed yearly | 200 grammar edits a month; 5 paraphrases a day | — | — | 2026-11-12 | [pricing](https://paperpal.com/pricing) |
| Jenni AI | Free plan + paid | $12/mo billed yearly | 10 AI autocompletes a day, 10 PDF uploads, 3 AI edits, 5 chat messages | — | Writing, reading and citing in one workspace | 2026-11-12 | [site](https://jenni.ai) [pricing](https://jenni.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/jenni-ai/) |
| Trinka AI | Free plan + paid | $4/mo billed yearly | 5,000 words a month, Lite grammar mode only, 5 AI writing requests | — | Technical papers on a low yearly price | 2026-11-12 | [site](https://www.trinka.ai) [pricing](https://www.trinka.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/trinka-ai/) |
| Grammarly | Free plan + paid | $12/mo | 100 AI prompts a month, grammar and tone checks | — | General grammar and tone across every app | 2026-11-12 | [site](https://www.grammarly.com) [pricing](https://www.grammarly.com/plans) [Zekai page](https://zekaiwork.com/ai-tools/grammarly/) |
| QuillBot | Free plan + paid | $4.17/mo billed yearly | Paraphrase up to 125 words per use | — | Paraphrasing with grammar and summaries | 2026-11-12 | [site](https://quillbot.com) [pricing](https://quillbot.com/premium) [Zekai page](https://zekaiwork.com/ai-tools/quillbot/) |
| Yomu AI | Paid | $10/mo billed yearly | No free plan | — | Essay drafting with 700-plus citation styles | 2026-11-12 | [site](https://yomu.ai) [pricing](https://yomu.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/yomu-ai/) |
| Textero AI | Free plan + paid | $8.25/mo billed yearly | 5 AI credits and 5 AI commands a day, unlimited PDF uploads | — | Student essays with a low yearly price | 2026-11-12 | [site](https://textero.ai) [pricing](https://textero.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/textero-ai/) |
| Writefull | Free | Free plan; paid price not published | Limited free quota of its tools | — | Language edits inside Word and Overleaf | 2026-11-12 | [site](https://www.writefull.com) [pricing](https://www.writefull.com/plans) [Zekai page](https://zekaiwork.com/ai-tools/writefull/) |
| Thesify | Paid | Not checked | No free plan | — | Draft feedback reports before submission | 2026-11-12 | [site](https://thesify.ai) [pricing](https://thesify.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/thesify/) |
| LanguageTool | Open source | Free (self-hosted) | No limit (self-hosted) | LGPL-2.1 | Self-hosted grammar and style checking |  | [code](https://github.com/languagetool-org/languagetool) [Zekai page](https://zekaiwork.com/free-open-source/languagetool/) |
| Writing Tools | Open source | Free (self-hosted) | No limit (self-hosted) | GPL-3.0 | Proofread and rewrite hotkeys in any app |  | [code](https://github.com/theJayTea/WritingTools) [Zekai page](https://zekaiwork.com/free-open-source/writing-tools/) |
| academic-humanizer | Open source | Free (self-hosted) | No limit (self-hosted) | MIT | Removing AI writing tells from papers |  | [code](https://github.com/AIScientists-Dev/academic-humanizer) [Zekai page](https://zekaiwork.com/free-open-source/academic-humanizer/) |

## How each alternative compares with Paperpal

- **Jenni AI** (Free plan + paid, $12/mo billed yearly, checked 2026-11-12): Jenni's Plus plan caps AI edits at 500 and AI chat at 500 a month, while its Free plan lists unlimited citations in 10,000+ styles; Paperpal's Prime counts 20k grammar edits instead. Switch if you draft long papers and want autocomplete, a PDF library and citations inside one editor. Stay with Paperpal if you want a grammar and consistency checker that also runs in Word and Google Docs.
- **Trinka AI** (Free plan + paid, $4/mo billed yearly, checked 2026-11-12): Trinka's Premium is $48 a year and adds APA, AMA, ACS, AGU and IEEE style-guide corrections plus up to 120 proofread files a year; plagiarism checks cost extra credits. Switch if you want the lowest yearly price and style-guide corrections for technical or engineering journals. Stay with Paperpal if you want plagiarism and AI detection allowances included in the monthly plan instead of credits.
- **Grammarly** (Free plan + paid, $12/mo, checked 2026-11-12): Grammarly's Free plan gives 100 AI prompts a month and Pro raises that to 2,000 prompts per member; it has no journal-fit check or reference check like Paperpal. Switch if you write emails, reports and essays across many apps, not only journal manuscripts. Stay with Paperpal if you need journal fit scoring, reference checks and chat with papers in the same tool.
- **QuillBot** (Free plan + paid, $4.17/mo billed yearly, checked 2026-11-12): QuillBot Premium lists $4.17 a month billed annually and a Free plan that paraphrases up to 125 words per use; it is not built around journal submission checks. Switch if paraphrasing and summarising are your main jobs and you want a low yearly price. Stay with Paperpal if you need plagiarism, reference checks and a journal-fit report for manuscripts.
- **Yomu AI** (Paid, $10/mo billed yearly, checked 2026-11-12): Yomu's Pro plan includes 1,000 AI actions a month and Ultra is unlimited; the pricing page lists efficient and frontier model families rather than a single in-house grammar engine. Switch if you draft essays with AI assistance and want a choice of chat models and citation formats. Stay with Paperpal if you want a grammar and consistency engine tuned for journal manuscripts, not chat models.
- **Textero AI** (Free plan + paid, $8.25/mo billed yearly, checked 2026-11-12): Textero's Premium is $19.99 monthly, $14.99 a month quarterly or $8.25 a month yearly, with unlimited credits and a 14-day money-back guarantee on quarterly and yearly. Switch if you write coursework essays and want unlimited AI credits on a $99 yearly plan. Stay with Paperpal if you submit to journals and need plagiarism, AI detection and reference-check allowances.
- **Writefull** (Free, Free plan; paid price not published): Writefull lists Supercomplete and TeXGPT for Overleaf plus a Writefull for Word add-in, and its Free plan marks every rewriting tool as limited. Switch if you write LaTeX papers in Overleaf and want sentence completion and equation or table help. Stay with Paperpal if you want a Word, Google Docs and Chrome editor with plagiarism and journal checks included.
- **Thesify** (Paid, Not checked): Thesify sells review credits, not editing: a Single Review is priced at EUR 14.95 and each report grades argument, method and structure and suggests journals. Switch if you want a peer-review style critique of a finished draft before you submit it. Stay with Paperpal if you want line-level grammar and paraphrase help while you are still writing.
- **LanguageTool** (Open source, Free (self-hosted)): LanguageTool's core is LGPL-2.1 and can run on your own server, so manuscripts need not leave your machine, but it has no journal-fit or reference check. Switch if you must keep unpublished manuscripts on your own server and accept rule-based grammar checks. Stay with Paperpal if you want AI paraphrasing, plagiarism reports and a journal-fit check in one hosted tool.
- **Writing Tools** (Open source, Free (self-hosted)): Writing Tools runs proofread, rewrite and summarise actions on selected text in any desktop app with your own API key or a local model, rather than a hosted editor. Switch if you want free rewrite hotkeys in every desktop app using your own key. Stay with Paperpal if you want an academic editor with plagiarism checks and citations without managing keys.
- **academic-humanizer** (Open source, Free (self-hosted)): academic-humanizer is an MIT agent skill that strips AI writing tells from academic papers and grant proposals; Paperpal offers a Humanize panel inside its own editor instead. Switch if you already use a coding-agent workflow and want an MIT-licensed rewriting step for drafts. Stay with Paperpal if you want a point-and-click editor with grammar, citations and journal checks built in.

## Open-source options in detail

- **LanguageTool** (https://github.com/languagetool-org/languagetool): Licence: LGPL-2.1
- **Writing Tools** (https://github.com/theJayTea/WritingTools): Licence: GPL-3.0
- **academic-humanizer** (https://github.com/AIScientists-Dev/academic-humanizer): Licence: MIT

## Questions

### What is the best alternative to Paperpal in 2027?
Jenni AI is the best overall Paperpal alternative on this page ($12/mo billed yearly). For no cost, Grammarly has a free plan (100 AI prompts a month, grammar and tone checks). To self-host, LanguageTool is open source (LGPL-2.1).

### Is there a free version of Paperpal?
Yes. Paperpal has a free plan: 200 grammar edits a month; 5 paraphrases a day. Paid plans start at $12/mo billed yearly, checked on 12 Nov 2026.

### Is there a 100% free alternative to Paperpal?
Yes. LanguageTool, Writing Tools, academic-humanizer are open source and free to self-host. Jenni AI, Trinka AI, Grammarly, QuillBot, Textero AI, Writefull have a free plan with limits, shown in the table.

### What is cheaper than Paperpal?
Trinka AI starts at $4/mo billed yearly, against $12/mo billed yearly for Paperpal, as listed on each vendor's pricing page on 12 Nov 2026.

### How much do Paperpal alternatives cost for a team of 5?
If each of 5 people buys the entry paid plan, at the prices Zekai checked on 12 Nov 2026, the monthly cost is Trinka AI $20/mo, QuillBot $20.85/mo, Textero AI $41.25/mo, against Paperpal $60/mo for Paperpal. Team and business plans can cost more per seat. The Zekai Cost Finder on this page recalculates for any team size.

### Which is better, Jenni AI or Paperpal?
Jenni's Plus plan caps AI edits at 500 and AI chat at 500 a month, while its Free plan lists unlimited citations in 10,000+ styles; Paperpal's Prime counts 20k grammar edits instead. Choose Jenni AI if you draft long papers and want autocomplete, a PDF library and citations inside one editor. Stay with Paperpal if you want a grammar and consistency checker that also runs in Word and Google Docs.

### Why are people leaving Paperpal?
The documented reasons are: Paperpal's 3 November 2026 workspace refresh puts Agents in the right dock and moves the classic Write, Translate, Research and Cite and Chat PDF tools under a More menu (3 Nov 2026); Paperpal's pricing page lists Prime at $25 billed monthly against $12 a month billed annually, and Pro agents as unlimited only during a promotional period (12 Nov 2026). Each is sourced in the section above.

### Paperpal vs Grammarly: which is better for research papers?
Paperpal is built around academic manuscripts, with journal-fit and reference checks, while Grammarly covers everyday writing across apps. For journal submissions Paperpal fits more directly; for emails and general text Grammarly's Free plan is usually enough.

## Related on Zekai

- [Jenni AI alternatives](https://zekaiwork.com/alternatives/jenni-ai/)
- [Grammarly alternatives](https://zekaiwork.com/alternatives/grammarly/)
- [QuillBot alternatives](https://zekaiwork.com/alternatives/quillbot/)
- [Writefull alternatives](https://zekaiwork.com/alternatives/writefull/)
- [AI for Writing, Translation & Localization](https://zekaiwork.com/professions/ai-writing-translation-localization-tools/)

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Live table, team cost finder and price alerts: https://zekaiwork.com/alternatives/paperpal/