ARKA

Legal information / Third-party licences

ARKA uses these third-party components under their licences:

ComponentVersionLicenceLink

ONLYOFFICE Docs Community Edition (Ascensio System SIA)

Modified version: a Lithuanian translation was added on 2026-10-17. Original code: https://github.com/ONLYOFFICE/DocumentServer. Source code of the changes: provided on request, info@pandafix.lt /teisine-informacija#onlyoffice.

10.0GNU AGPL v3 with additional termshttps://github.com/ONLYOFFICE/DocumentServer/blob/v10.0.0/LICENSE

7-Zip (Igor Pavlov)

7-Zip, GNU LGPL, www.7-zip.org, is used for archives. Some code is BSD 3-clause (ZSTD) and BSD 2-clause (XXH64). RAR archives are not extracted.

—GNU LGPL; some code is BSD 3-clause (ZSTD) and BSD 2-clause (XXH64)https://www.7-zip.org/license.txt

ispell-lt (Hunspell lt_LT)

Lithuanian spelling dictionary in the ONLYOFFICE container. Setup checks lt_LT.dic and lt_LT.aff, not dictionaries.json.

—BSD-3-Clausehttps://github.com/ispell-lt/ispell-lt

Node.js

—MIThttps://github.com/nodejs/node/blob/main/LICENSE

cloudflared (Cloudflare)

—Apache License 2.0https://github.com/cloudflare/cloudflared/blob/master/LICENSE

Docker

—Docker Engine Apache 2.0; Docker Desktop under the Docker Subscription Service Agreementhttps://www.docker.com/legal/docker-subscription-service-agreement/

PostgreSQL (ONLYOFFICE viduje)

—PostgreSQL Licensehttps://www.postgresql.org/about/licence/

TipTap

ARKA Docs editor interface. Not used when the server editor is ONLYOFFICE.

2.27.3MIThttps://github.com/ueberdosis/tiptap/blob/v2.27.3/LICENSE.md

ProseMirror

Document model inside ARKA Docs, via @tiptap/pm.

1.42.6MIThttps://github.com/ProseMirror/prosemirror-view/blob/master/LICENSE

Yjs

Real-time collaborative editing.

13.6.33MIThttps://github.com/yjs/yjs/blob/main/LICENSE

y-prosemirror

Sync between Yjs and ProseMirror.

1.3.7MIThttps://github.com/yjs/y-prosemirror/blob/master/LICENSE

y-protocols

Other users’ carets and names.

1.0.7MIThttps://github.com/yjs/y-protocols/blob/master/LICENSE

mammoth

DOCX import into ARKA Docs. Licence BSD-2-Clause.

1.13.0BSD-2-Clausehttps://github.com/mwilliamson/mammoth.js/blob/master/LICENSE

docx (docx.js)

DOCX export from ARKA Docs.

9.12.0MIThttps://github.com/dolanmiu/docx/blob/master/LICENSE

i18next

Language of the interface, errors and email.

26.5.3MIThttps://github.com/i18next/i18next/blob/master/LICENSE

react-i18next

React adapter for i18next.

17.1.0MIThttps://github.com/i18next/react-i18next/blob/master/LICENSE

i18next-icu

ICU MessageFormat, including Lithuanian plurals.

2.6.1MIThttps://github.com/i18next/i18next-icu/blob/master/LICENSE

intl-messageformat

ICU message format used by i18next-icu.

12.1.3BSD-3-Clausehttps://github.com/formatjs/formatjs/blob/main/LICENSE.md

fast-xml-parser

docx document.xml, styles.xml, numbering.xml and sectPr (sections, columns, headers).

5.11.2MIThttps://github.com/NaturalIntelligence/fast-xml-parser/blob/master/LICENSE

eslint-plugin-i18next

Finds hard-coded text during development. Not included in the production bundle.

6.1.5ISChttps://github.com/edvardchen/eslint-plugin-i18next/blob/master/LICENSE

Umami

Optional visit summary on our own server, stats.pandafix.lt. No cookies. Off by default. Google Analytics and Meta Pixel are not used. The main ARKA summary works without Umami.

2MIThttps://github.com/umami-software/umami/blob/master/LICENSE

jsdiff

Compares contracts and offers by paragraph and word. The npm package name is diff.

9.0.0BSD-3-Clausehttps://github.com/kpdecker/jsdiff/blob/master/LICENSE

markdown-it

ARKA Docs help. HTML from Markdown is off; links are only https, mailto and internal addresses.

15.0.3MIThttps://github.com/markdown-it/markdown-it/blob/master/LICENSE

qrcode

QR code from text or a link. Inserted into the document as a picture. Also used for the sign-in code.

1.5.4MIThttps://github.com/soldair/node-qrcode/blob/master/license

Apache ECharts

ARKA Docs charts: column, bar, line, pie, doughnut, area and scatter.

6.1.0Apache-2.0https://github.com/apache/echarts/blob/master/LICENSE

ExcelJS

Chart data xlsx embedded in DOCX so Word can edit the chart; opening and saving ARKA Sheets .xlsx.

4.4.0MIThttps://github.com/exceljs/exceljs/blob/master/LICENSE

JSZip

Opening and saving ARKA Slides .pptx (a zip package). Dual licence MIT or GPLv3 – used under MIT.

3.10.2MIThttps://github.com/Stuk/jszip/blob/main/LICENSE.markdown

cfb (Compound File Binary)

Reading and writing older .xls (Excel 97–2003) containers. Since 1.4.258, xlsx (SheetJS CE 0.18.5) is removed.

1.2.2Apache-2.0https://github.com/SheetJS/js-cfb/blob/master/LICENSE

KaTeX

Equation display and MathML, from which ARKA builds OMML.

0.19.0MIThttps://github.com/KaTeX/KaTeX/blob/main/LICENSE

MathLive

Equation editing. MIT licence only, not MathLive Pro.

0.111.1MIThttps://github.com/arnog/mathlive/blob/master/LICENSE

lowlight

Code-block syntax. Grammars from highlight.js (BSD-3-Clause).

3.3.0MIThttps://github.com/wooorm/lowlight/blob/main/license

highlight.js

Language grammars used through lowlight.

11.11.2BSD-3-Clausehttps://github.com/highlightjs/highlight.js/blob/main/LICENSE

perfect-freehand

Pen and marker strokes on the draw tab. Loaded only when the document has a drawing.

1.2.3MIThttps://github.com/steveruizok/perfect-freehand/blob/main/LICENSE

@citation-js/core

Bibliography record model. citeproc-js is not used.

0.9.0MIThttps://github.com/citation-js/citation-js/blob/main/LICENSE

@citation-js/plugin-bibtex

Reads BibTeX. ARKA builds the reference list, not citeproc.

0.9.0MIThttps://github.com/citation-js/citation-js/blob/main/LICENSE

@citation-js/plugin-bibjson

Reads CSL-JSON and Zotero records.

0.9.0MIThttps://github.com/citation-js/citation-js/blob/main/LICENSE

@citation-js/date

Date fields for citation-js plugins.

0.5.1MIThttps://github.com/citation-js/citation-js/blob/main/LICENSE

@citation-js/name

Author names for citation-js plugins.

0.4.2MIThttps://github.com/citation-js/citation-js/blob/main/LICENSE

moo

BibTeX lexer used by @citation-js/plugin-bibtex.

0.5.3BSD-3-Clausehttps://github.com/tj/moo/blob/master/LICENSE

sync-fetch-undici

A citation-js dependency. Document content is not sent through it.

0.7.1MIThttps://github.com/nktnet1/sync-fetch-undici/blob/master/LICENSE

Hunspell (WebAssembly, public/hunspell/hunspell.wasm)

Spellcheck engine, an unmodified separate wasm file. The MPL-1.1 option of MPL-1.1 / GPL-2.0 / LGPL-2.1 is chosen. Source: https://github.com/hunspell/hunspell, wasm build: https://github.com/kwonoj/hunspell-asm (MIT). Licence text: /hunspell/LICENSE-MPL-1.1.txt.

hunspell-asm 4.0.2 build fc6a952-200131MPL-1.1https://www.mozilla.org/MPL/1.1/

Hunspell dictionaries (dictionary-lt, -en, -lv, -pl, -ru, -uk, -de)

Separate data files under /dict/<language>/, loaded only when needed; the licence is in each folder.

2.0.0 / 4.0.0 / 2.0.0 / 2.0.0 / 3.0.0 / 4.0.0 / 3.0.0BSD-3-Clause / MIT AND BSD / LGPL-2.1 / MPL-2.0 / BSD-3-Clause / GPL-3.0 / GPL-2.0 OR GPL-3.0https://github.com/wooorm/dictionaries

tesseract.js

Text from a picture. Loaded only when OCR is used. Languages lit, eng, rus.

7.0.0Apache-2.0https://github.com/naptha/tesseract.js/blob/master/LICENSE

axe-core

MPL-2.0, tests only, not linked into the app. Contrast is checked apart from the program code.

4.14.0MPL-2.0https://github.com/dequelabs/axe-core/blob/develop/LICENSE

The document editor is based on ONLYOFFICE Docs Community 10.0 (Ascensio System SIA). Modified version: a Lithuanian translation was added on 2026-10-17. Licence AGPL v3 + additional terms. Source code: provided on request, info@pandafix.lt /teisine-informacija#onlyoffice.

ONLYOFFICE is a trademark of Ascensio System SIA.

All licences

The full licence texts are also on every ARKA server in the folder C:\\ARKA\\licencijos.

ONLYOFFICE is a trademark of Ascensio System SIA.

ARKA is not an official ONLYOFFICE product and is not affiliated with Ascensio System SIA.