Letter generators for built-in forms
If you need a letter built from answers to their own forms, 12 tools here can make one. The first three in our order are Knackly, Docxpresso and MyCase Document Automation. Of these, 4 have a free tier.
- Tools
- 12
- With USD price
- 6, from $19.50
- Free tier
- 4
- Direct / via Zapier
- 9 / 3
- Checked
- 20 Oct 2026
- 01
Knackly knackly.ioLegal document automation.
Outputs DOCX, PDF Template Word Also reads API, Zapier/Make/n8n$209 / mo - 02
Docxpresso docxpresso.comEUR pricing shown as Core 2500 EUR/user/mo (likely 25.00, formatting unclear).
Outputs PDF, DOCX Template Word Also reads API$27 EUR 25/user, converted - 03
MyCase Document Automation mycase.comLegal PM with Word-based automation (Woodpecker redirects here).
Outputs DOCX, PDF, e-sign documents Template Word$79 / mo - 04
Zoho Writer zoho.comFree editor with Document Automation add-on credits (200/mo free).
Outputs PDF, DOCX, e-sign documents, email Template Word Also reads Zoho, CSVNot published free tier - 05
docassemble docassemble.orgMIT guided-interview and document assembly.
Outputs PDF, DOCX Template Word, PDF form Also reads APIFree - 06
HotDocs mitratech.comOwned by Mitratech. Desktop and cloud.
Outputs DOCX, PDF Template Word Also reads APIOn request - 07
Avvoka avvoka.comLegal drafting and document automation for law firms.
Outputs DOCX, e-sign documents Template WordOn request - 08
Clio Draft clio.comFormerly Lawyaw. Word templates and court forms.
Outputs DOCX, PDF Template Word, PDF formNot published - 09
Smokeball smokeball.comLegal practice management with document automation and form library.
Outputs DOCX, PDF Template WordNot published - 10
Formerly Documate (Documate Inc. dba Gavel).
Outputs DOCX, PDF Template Word, PDF form Also reads API, Zapier/Make/n8n$83 / mo - 11
Micro $19.50/mo shown; price formatting unclear on page.
Outputs DOCX, XLSX, PDF Template Word Also reads Google Sheets, CSV, Excel, API +1$19.50 / mo, cheapest here - 12
Individual $33/mo billed $390/yr.
Outputs PDF, DOCX, e-sign documents Template Word, Visual builder Also reads API, Zapier/Make/n8n$33 / mo
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What differs for built-in forms
For letters built from answers to their own forms, the lowest paid starting price is $19.50 a month, from Documentero. Published starting prices run from $19.50 to $209 a month, the top end from Knackly.
These tools for letters most often write DOCX (12), PDF (11) and e-sign documents (4). Among them, 3 need Zapier, Make or n8n to read answers to their own forms, so they sit after the tools with a direct connection. A submission to the tool's own form builds the document from the answers. Prices were checked on 20 Oct 2026.
Nearby pages
Broader list: Document generation for built-in forms (27 tools).
Related lists: Contract generators for built-in forms (26 tools), Onboarding pack generators for built-in forms (8), Certificate generators for built-in forms (7), Invoice generators for built-in forms (7), Letter generators for JSON API (16), Letter generators for Google Sheets (8), Letter generators for Excel (5), Letter generators for Zapier, Make or n8n (5).
How to generate PDFs from built-in forms: a step-by-step guide, updated 21 Oct 2026.
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