macOS desktop translation and OCR
Bob is a macOS menu-bar app for translation and OCR, supporting screenshot, selection, and input translation with many online services.
Same problem, same approach. Swapping one for another is a config change, not a rewrite.
Choose it for an open-source macOS alternative with offline OCR and built-in dictionary lookup.
一个简洁优雅的词典翻译 macOS App。开箱即用，支持离线 OCR 识别，支持有道词典，🍎 苹果系统词典，🍎 苹果系统翻译，OpenAI，Gemini，DeepL，Google，Bing，腾讯，百度，阿里，小牛，彩云和火山翻译。A concise and elegant Dictionary and Translator macOS App for looking up words and translating text.
Choose it for a cross-platform open-source drop-in with plugin support.
🌈一个跨平台的划词翻译和OCR软件 | A cross-platform software for text translation and recognition.
Choose it if you want a cross-platform screen tool that also does image search and recording.
截屏 离线OCR 搜索翻译 以图搜图 贴图 录屏 万向滚动截屏 屏幕翻译 Screenshot Offline OCR Search Translate Search for picture Paste the picture on the screen Screen recorder Omnidirectional scrolling screenshot Screen translator 支持Windows Linux macOS
Solves the same problem with a different architecture or at a different layer. Expect to rewrite the integration.
Choose it if you need a Bob-like translation/OCR tool on Windows.
🚀 Screenshots, word marking, OCR, AI, translation software || 截图、划词、文字识别、AI、翻译软件
Choose it for ChatGPT-based translation delivered as a browser extension/desktop app, without OCR.
基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API.
Choose it as a Windows-native (WPF) translation/OCR app with an MIT license.
A ready-to-go translation ocr tool developed with WPF/WPF 开发的一款即用即走的翻译、OCR工具
An earlier or more limited way to do the job. Still the right call when you need something small, proven, or CPU-only.
Choose it for visual novel translation with game hooks and specialized OCR.
视觉小说翻译器 / Visual Novel Translator
Choose it for real-time overlay translation of games and videos, not general-purpose OCR.
Advanced real-time screen translator for games, hardcoded subtitles in videos, static text and etc.
Choose it only if you already use PopClip and want a lightweight Google translate action, without OCR.
(Unofficial) A free and easy-to-use Google Translate PopClip Extension (macOS). 一个免费的谷歌翻译 PopClip 插件 (macOS)。
Choose it for batch translation of manga images with layout preservation.
Translate manga/image 一键翻译各类图片内文字 https://cotrans.touhou.ai/ (no longer working)
Choose it for a lightweight cross-platform OCR-only tool.
树洞 OCR 文字识别（一款跨平台的 OCR 小工具）
Choose it for PDF document translation with format preservation.
[EMNLP 2025 Demo] PDF scientific paper translation with preserved formats - 基于 AI 完整保留排版的 PDF 文档全文双语翻译，支持 Google/DeepL/Ollama/OpenAI 等服务，提供 CLI/GUI/MCP/Docker/Zotero
Choose it for an older Windows OCR/translation utility with extra functions; unmaintained.
PandaOCR - 多功能OCR图文识别+翻译+朗读+弹窗+公式+表格+图床+搜图+二维码
Choose it for an offline OCR-focused tool with batch and PDF support, without translation.
OCR software, free and offline. 开源、免费的离线OCR软件。支持截屏/批量导入图片，PDF文档识别，排除水印/页眉页脚，扫描/生成二维码。内置多国语言库。
These projects were analysed and named Bob among their alternatives. The relationship is not symmetric — how Bob rates them is a separate judgement, made when Bob is analysed in its own right.
calls Bob “when you are on macOS and need a polished, extensible translation and OCR app (supports plugins for AI services).”
基于 ChatGPT API 的划词翻译浏览器插件和跨平台桌面端应用 - Browser extension and cross-platform desktop application for translation based on ChatGPT API.
calls Bob “Same class: mature macOS translation/OCR app with many services; ideal for Mac users.”
🌈一个跨平台的划词翻译和OCR软件 | A cross-platform software for text translation and recognition.
calls Bob “Choose for a mature macOS-native translation/OCR app with a long track record and similar features.”
一个简洁优雅的词典翻译 macOS App。开箱即用，支持离线 OCR 识别，支持有道词典，🍎 苹果系统词典，🍎 苹果系统翻译，OpenAI，Gemini，DeepL，Google，Bing，腾讯，百度，阿里，小牛，彩云和火山翻译。A concise and elegant Dictionary and Translator macOS App for looking up words and translating text.
calls Bob “macOS translation/OCR app; choose for native macOS experience”
PandaOCR - 多功能OCR图文识别+翻译+朗读+弹窗+公式+表格+图床+搜图+二维码
calls Bob “choose for a macOS-native GUI with integrated OCR and translation.”
Contexts Optical Compression
calls Bob “Choose for a macOS-only translation and OCR app, not a browser extension.”
沉浸式双语网页翻译扩展 , 支持输入框翻译， 鼠标悬停翻译， PDF, Epub, 字幕文件, TXT 文件翻译 - Immersive Dual Web Page Translation Extension
calls Bob “macOS translation/OCR app; choose if you need a native macOS desktop tool.”
A simple, open source bilingual translation extension & Greasemonkey script (一个简约、开源的 双语对照翻译扩展 & 油猴脚本)
calls Bob “macOS translation and OCR app; choose it for native macOS integration and system-wide shortcuts.”
Translation plugin for IntelliJ-based IDEs/Android Studio.
calls Bob “End-user macOS translation/OCR app.”
Enhances Tesseract OCR output using LLMs (local or API) for error correction, smart chunking, and markdown formatting of scanned PDFs