The editor is free — you only pay for AI beyond the quota

A free text editor
with AI inside the document

Write, edit and review documents in the browser: tracked changes with per-author attribution, comments anchored to a selection, real-time co-editing, Word and PDF import, export to six formats. AI underlines spelling and grammar problems instead of rewriting your document.

wumu.ru/documents/edit
WŬMÙ text editor: an A4 document with the formatting toolbar
$0
for the editor itself
no cap
number of documents
6
export formats
4
interface languages

What exactly is free

No asterisks — here is the list of what we do not charge for.

Documents without a counter

Create, edit and save as many documents as you need. The only limit is your account's total storage.

Working together

Simultaneous editing with collaborator cursors, threaded comments with @mentions and tracked changes — none of it is metered.

Import and export

Open .docx with images and PDF files, export to DOCX, PDF, ODT, EPUB, HTML and TXT. Conversion never touches your quota.

Quota is spent on AI requests only. On the free plan that is 5,000 tokens and 10 requests per month.

What the editor can do

The things people usually install a desktop office suite for.

Reviewing like in Word

Turn on tracked changes and every edit is recorded with its author and time. Deleted text is struck through rather than gone. Accept or reject edits one by one, in the text itself or from the side panel.

wumu.ru/documents/edit
Tracked changes showing the author with accept and reject buttons

Comments on a selection

Select a fragment and leave a comment with a discussion thread and an @mention. The panel lists threads in document order and tells you plainly when the commented text has been deleted.

wumu.ru/documents/edit
The comments panel next to the document

Real-time collaboration

Collaborator cursors appear right in the text, and the header shows who is in the document and whether the connection is alive. Edits sync without a Save button.

wumu.ru/documents/edit
Collaborator cursors and the presence indicator

Document layout

A4 pages with headers and footers, footnotes and endnotes, columns, KaTeX formulas, a table of contents and heading numbering. A pageless mode is available for continuous text.

wumu.ru/documents/edit
A document with headers, footnotes and a table of contents

AI that helps instead of rewriting

We deliberately never let the AI replace your whole document: it suggests, you decide.

Spelling and grammar checking

Problems are underlined in place. Click an underline and pick a replacement. Formatting, comments and your colleagues' edits stay untouched.

Inline completion as you type

The editor offers a continuation of your sentence in grey. Not what you meant? Just keep typing.

An assistant over your document

Ask about the text: shorten it, simplify it, make it stricter, explain a passage. The answer arrives in the side panel — inserting it is your call.

AI is available on the free plan within a monthly quota. When the quota runs out, the editor keeps working in full.

Capabilities at a glance

A verifiable list — no comparisons with other products.

CapabilityHow it works in WŬMÙ
Tracked changesWord-level, with author and time; accept or reject one at a time
CommentsAnchored to a selection, threads, @mentions, document order
CollaborationSimultaneous editing, collaborator cursors and presence
ImportDOCX (with images), PDF, RTF, ODT
ExportDOCX, PDF, ODT, EPUB, HTML, TXT
Price of the editorFree, with no cap on the number of documents

What we want to be upfront about

  • An account is required: documents live in your workspace.
  • DOCX is built from the editor's own markup, so columns and page headers are not carried over into Word.
  • Metafile images from Word (EMF/WMF) cannot be displayed by browsers — the editor says so during import.

Frequently asked questions

Open a document right now

Signing up is free and the editor is available as soon as you are in.

Start free

No card required. The AI quota resets every month.