DeepL Translator

PDFMathTranslate

PDFMathTranslate is a software that translates scientific papers in PDF format while preserving their original layout. It supports multiple translation services, including Google, DeepL, Ollama, and OpenAI. The software provides various interfaces, including CLI, GUI, MCP, Docker, and Zotero. PDFMathTranslate is designed to help researchers and scientists overcome language barriers and access knowledge more easily.

Happy Scribe

Happy Scribe is a transcription and subtitling platform used by more than 41,000 teams and 6 million users. It transcribes, subtitles, and translates audio and video in 150+ languages, offering up to 99 percent accuracy on clear audio and 85-95 percent accuracy with multiple speakers, along with 94 percent accurate speaker diarization. Beyond transcripts and subtitles, Happy Scribe includes an AI Notetaker that automatically joins calendar meetings on Zoom, Microsoft Teams, and Google Meet, plus an AI Chat feature for querying transcripts. The platform is SOC 2 Type II certified and GDPR compliant with EU data residency, and offers a web-based editor, mobile apps, and an API for developers, alongside optional human-verified transcription for guaranteed 99%+ accuracy.

BookTranslator

BookTranslator is an AI-powered online service designed to translate complete books and long documents from one language into another in minutes. Instead of copying text from PDFs or breaking a book into small chunks, users can upload an entire file — including PDF, EPUB, DOCX, MOBI, TXT, images, subtitles, and manga — and let the platform handle context-aware translation, automatic glossary consistency, OCR for scanned pages, and layout preservation. It supports 168 languages and 52+ file formats, with a maximum file size of 300MB. The platform is built to handle whole books rather than short sentences. Its context-aware AI reads passages in full to capture tone and nuance, while an auto glossary keeps names, places, and technical terms consistent from the first page to the last. Layout preservation means tables, images, footnotes, and formatting stay in place, so the translated file resembles the original. A bilingual reading mode also lets users view the source and translated text side by side, which is useful for language learners and professionals checking accuracy. BookTranslator reports that it has translated over 834 million words for more than 25,000 readers, including users from universities, publishers, and research communities such as Tsinghua University, Yale, Harvard, Elsevier, Springer Nature, and Penguin Random House. The service is positioned as a faster, cheaper alternative to manually hunting for existing translations or rebuilding documents, making it particularly valuable for researchers, students, authors, publishers, translators, and global readers.

DocTranslator

DocTranslator is an AI-powered online document translation service that supports over 120 languages and preserves the original formatting of uploaded documents. It handles large files up to 1 GB or 5,000 pages and supports formats like PDF, DOCX, XLSX, PPTX, IDML, TXT, JPG, JPEG, PNG, CSV, and JSON. The platform offers both machine translation and professional human translation options, with a focus on speed, accuracy, data security, and ease of use. It is subscription-based, starting with a paid 7-day trial.

Maestra

Maestra is an AI media localization platform that converts audio and video into transcripts, subtitles, translations, and dubbed voiceovers in more than 125 languages. It generates SRT and VTT subtitle files automatically, translates content with synchronized lip-sync, and produces AI dubbed voiceovers with voice cloning as an alternative to hiring voice talent. The platform also supports real-time live transcription and translation for meetings and broadcasts, and integrates with tools like YouTube, TikTok, Zoom, Microsoft Teams, Slack, and Zapier. Free standalone tools, including a subtitle editor and SRT editor, are available alongside its paid platform.