> For the complete documentation index, see [llms.txt](https://docs.wproofreader.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wproofreader.com/resources/third-party-software-and-licenses.md). # Third-party software and licenses WebSpellChecker utilizes various open-source software components to enhance our products. On this page, you’ll find a detailed list of these components, including their licenses and versions as of the latest version of our software, reflecting our dedication to open-source license compliance and transparency. A complete list of transitive dependencies is available upon request. {% hint style="info" %} Applicable to version: vspace.vars.current\_version. {% endhint %} | [Rangy](https://github.com/timdown/rangy) | [MIT](https://github.com/timdown/rangy/blob/master/LICENSE) | 1.3alpha.681 | | ------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------- | | [JS-Signals](https://github.com/millermedeiros/js-signals) with [modifications](https://github.com/WebSpellChecker/js-signals/tree/wsc-dev) | [MIT](https://github.com/millermedeiros/js-signals/blob/master/README.md#license) | 0.8.1 | | [Jquip](https://github.com/mythz/jquip) | [MIT](https://opensource.org/license/mit/) | 0.0.3 | | [InnoSetup](http://www.jrsoftware.org/isinfo.php) | [Modified BSD](https://jrsoftware.org/files/is/license.txt) | 6.1.2 | | [PHF](https://github.com/wahern/phf/tree/rel-20190215) | [MIT](https://github.com/wahern/phf/blob/rel-20190215/LICENSE) | rel-20190215 | | [Tokenizers](https://github.com/huggingface/tokenizers) | [Apache 2.0](https://github.com/huggingface/tokenizers/blob/main/LICENSE) | 0.22.2 | | [LanguageTool](https://languagetool.org/) with [modifications](https://github.com/WebSpellChecker/languagetool) | [LGPL 2.1](https://github.com/languagetool-org/languagetool/blob/master/languagetool-standalone/COPYING.txt) | 2026-06-12-snapshot | | [Opennlp with modifications](https://github.com/WebSpellChecker/opennlp) | [Apache 2.0](https://github.com/apache/opennlp/blob/main/LICENSE) | 1.9.4 | | [Hunspell](https://github.com/hunspell/hunspell/tree/master) with [modifications](https://github.com/WebSpellChecker/hunspell/tree/multithreaded_1.7.2) | [**MPL 1.1**/GPL 2.0/LGPL 2.1](https://github.com/hunspell/hunspell/blob/master/license.hunspell) | 1.7.2 | | [POCO C++ Libraries](https://github.com/pocoproject/poco) | [BSL 1.0](https://github.com/pocoproject/poco?tab=License-1-ov-file#readme) | 1.14.2 | | [MariaDB C API client library](https://mariadb.com/kb/en/about-mariadb-connector-c/) | [LGPL‑2.1‑or‑later](https://mariadb.com/docs/connectors/mariadb-connector-c/mariadb-connector-c-guide#license) | 3.4.3 | | [Simpleini](https://github.com/brofield/simpleini) | [MIT](https://github.com/brofield/simpleini/blob/master/LICENCE.txt) | 4.22 | | [Sparsepp](https://github.com/greg7mdp/sparsepp/) | [Modified BSD](https://github.com/greg7mdp/sparsepp/blob/master/LICENSE) | 1.22 | | [OpenSSL](https://www.openssl.org/) | [Apache 2.0](https://www.openssl.org/source/license.html) | 3.6.0 | | [Compact Language Detector 2 (CLD2)](https://github.com/CLD2Owners/cld2) | [Apache 2.0](https://github.com/CLD2Owners/cld2/blob/master/LICENSE) | 2.0 | | [TensorFlow](https://github.com/tensorflow/tensorflow) | [Apache 2.0](https://github.com/tensorflow/tensorflow/blob/master/LICENSE) | 2.18.0 | | [Muppet RoBERTa](https://github.com/huggingface/transformers) | [MIT](https://github.com/huggingface/transformers?tab=Apache-2.0-1-ov-file#readme) | – | | [XLM-RoBERTa](https://huggingface.co/FacebookAI/xlm-roberta-base) | [MIT](https://huggingface.co/datasets/choosealicense/licenses/blob/main/markdown/mit.md) | – | | [ICU for C++ (ICU4C)](https://github.com/unicode-org/icu/tree/main/icu4c) | [UNICODE License 3.0](https://github.com/unicode-org/icu?tab=License-1-ov-file#readme) | 78.1 | | [JSON for Modern C++ by Niels Lohmann](https://json.nlohmann.me/) | [MIT](https://github.com/nlohmann/json/blob/develop/LICENSE.MIT) | 3.12.0 | | [GPT-2](https://huggingface.co/gpt2) | [MIT](https://huggingface.co/datasets/choosealicense/licenses/blob/main/markdown/mit.md) | – | | [MITIE](https://github.com/mit-nlp/MITIE) | [BSL 1.0](https://github.com/mit-nlp/MITIE#license) | [0.7](https://github.com/mit-nlp/MITIE/releases/tag/v0.7) | | [AWS SDK for C++](https://github.com/aws/aws-sdk-cpp/tree/main) | [Apache 2.0](https://github.com/aws/aws-sdk-cpp/blob/main/LICENSE) | 1.11.692 | | [Hunspell dictionaries with modifications](https://github.com/WebSpellChecker/hunspell-dictionaries-modifications) | Various permissive open-source licenses (per dictionary) | N/A |