Awesome GitHub RepositoriesWorkbook Encryption

Excelize is a library for reading and writing spreadsheet files in the Office Open XML format. It provides a comprehensive suite of tools for programmatically creating, modifying, and analyzing workbooks, worksheets, and cell data, ensuring compatibility across various office software suites through structured XML serialization. The library distinguishes itself with a built-in formula calculation engine that evaluates complex mathematical and logical expressions directly against workbook data. It also features a memory-mapped streaming architecture, which allows for the efficient processing o

SumatraPDF is a lightweight, multi-format document viewer designed for rendering PDF, eBook, and comic book files within a unified interface. It functions as both a graphical reading environment and a command-line document processor, enabling users to automate file conversion, merging, and extraction tasks without requiring a graphical interface. The application distinguishes itself through a single-executable binary distribution that utilizes direct-to-GDI rendering and memory-mapped file access to maintain high performance and minimal memory overhead. Users can personalize their workspace b

kkFileView is a Spring Boot-based file preview server that provides a universal document viewer for rendering office files, PDFs, images, and 3D models directly in a web browser. It functions as a secure document rendering service that allows users to view a wide variety of file formats without requiring local software installations. The project distinguishes itself through specialized CAD to SVG conversion, transforming complex drawings into web-compatible formats. It includes a RESTful file preview API that allows these rendering capabilities to be integrated into external business applicat

pdfkit is a JavaScript PDF generation library used to programmatically create binary PDF documents in Node.js and browser environments. It functions as a vector graphics engine for rendering paths, shapes, gradients, and tiling patterns, and as a tool for producing rich text and tagged documents that follow international accessibility standards for screen reader compatibility. The library includes a security and encryption utility for applying document encryption and restricting user permissions regarding printing, copying, or editing. It also serves as a form and annotation tool, enabling th

PyPDF2 is a pure Python library for reading, writing, and manipulating PDF files. It functions as a document manipulator, text extractor, and encryption tool, allowing users to process PDF files without relying on external C libraries or native binaries. The library provides specialized tools for modifying document structures, such as merging multiple files into one, splitting documents into separate files, and transforming page layouts through cropping. It also includes capabilities for securing documents via passwords and encryption. Additional capabilities include the extraction of writte

This project is a collection of bash automation scripts and command-line utilities designed to automate common tasks and retrieve information from web APIs. It serves as a toolkit for developer references, network diagnostics, and media access directly from the terminal. A central component of the suite is a GitHub Gist manager that handles the full lifecycle of code snippets. This includes cloning and syncing Gists into local directories for offline access, organizing content through hashtags, and searching through snippet descriptions and file contents using regular expressions. The toolki

pypdf is a Python library for parsing, manipulating, and generating PDF documents. It provides high-level operations for document processing, such as merging multiple files into one or splitting a single document into smaller files. The project includes specialized tools for managing interactive elements, including the creation and modification of annotations, hyperlinks, and form fields. It also supports advanced metadata management, allowing for the extraction and modification of standard document properties and XML-based XMP metadata. Beyond basic structural changes, the library covers pa

PyMuPDF is a comprehensive PDF manipulation library and document analysis tool. It serves as a text extraction tool, OCR engine, and image converter, providing a programmatic interface to edit, merge, split, and optimize PDF and Office documents. The project distinguishes itself through high-performance capabilities, including the use of C-bindings for low-level manipulation and parallelized page processing to accelerate workloads. It provides specialized conversion paths, such as transforming PDF content into Markdown for retrieval-augmented generation and large language model pipelines. It

pdfcpu is a Go PDF processing library and command-line interface designed for programmatically manipulating, optimizing, and validating PDF files. It provides a toolkit for document content modification and structural management. The project distinguishes itself as an optimization tool and layout engine, capable of reducing file sizes and improving loading speeds by streamlining internal structures. It also functions as a security manager, providing password-based encryption, decryption, and digital signature verification. Its capability surface includes page management for merging, splittin

nb is a command-line note manager and personal knowledge management system that organizes plain-text documents and web bookmarks. It functions as a Markdown knowledge base, allowing users to create a structured collection of information through a shell-scripted interface. The system uses Git for versioning and synchronization, tracking full revision history and enabling the sync of notebooks across multiple devices via remote repositories. It provides security for sensitive data through AES-256 or GPG encryption and supports document conversion into various publishing formats using the Pandoc

Paperless is a self-hosted document management system designed to digitize, index, and archive paper documents. It functions as an optical character recognition system that converts scanned images and PDFs into a searchable digital library, providing a web-based interface for querying and retrieving documents from a database. The system features an automated file ingestion pipeline that monitors specific directories and email inboxes to process and import documents without manual uploading. To maintain a private archive, it includes on-disk encryption for sensitive files and the ability to or

PHPWord is a PHP word processing library used for programmatically reading and writing word processing documents. It functions as an OOXML document generator, a word file parser, and a document template engine. The library enables the generation of new documents by applying structured data to existing templates or by creating files from scratch. It provides capabilities for extracting and parsing content, metadata, and structure from existing word processing files. The project covers a broad range of document generation features, including layout formatting, metadata management, and the inse

fsnotes is a markdown notes manager and cross-platform markdown editor for macOS and iOS. It functions as a personal knowledge base that organizes plain text and markdown files across folders using tags and bidirectional links. The system provides a secure environment through an encrypted plain text notebook that protects individual notes and folders. It implements Git-based note versioning to track document changes and maintain backups, while relying on external cloud storage services to synchronize files across devices. The application renders mathematical formulas, diagrams, and syntax-hi

yn एक मार्कडाउन टेक्स्ट एडिटर और नॉलेज मैनेजमेंट टूल है जिसे एक इंटरैक्टिव डॉक्यूमेंट कैनवास के रूप में डिज़ाइन किया गया है। यह विकी-लिंक्स, हैशटैग और लोकल फ़ाइल रिपॉजिटरी के माध्यम से जानकारी को व्यवस्थित करने के लिए एक नेटवर्क नोट-टेकिंग सिस्टम के रूप में कार्य करता है, जबकि स्वचालित टेक्स्ट जनरेशन और पूर्णता के लिए एक AI राइटिंग असिस्टेंट को एकीकृत करता है। यह प्रोजेक्ट अपनी मल्टी-इंजन डायग्रामिंग क्षमताओं के लिए जाना जाता है, जो Mermaid, PlantUML और ECharts का उपयोग करके टेक्स्ट-आधारित सिंटैक्स को विज़ुअल्स में रेंडर करता है। यह एक एक्स्टेंसिबल प्लगइन फ्रेमवर्क का उपयोग करता है जो JavaScript मॉड्यूल और इवेंट हुक के माध्यम से कस्टम UI तत्वों और सुविधाओं को जोड़ने की अनुमति देता है। एप्लिकेशन कंटेंट ऑथरिंग और तकनीकी क्षमताओं की एक विस्तृत श्रृंखला को कवर करता है, जिसमें LaTeX गणित रेंडरिंग, एकीकृत कोड निष्पादन और इंटरैक्टिव स्लाइड डेक का निर्माण शामिल है। यह नॉलेज ग्राफ विज़ुअलाइज़ेशन के माध्यम से उन्नत डॉक्यूमेंट संगठन प्रदान करता है और डॉक्यूमेंट एन्क्रिप्शन, वर्ज़न ट्रैकिंग और बैकएंड-ड्रिवन प्रारूप रूपांतरण के लिए उपयोगिताएँ शामिल करता है। एप्लिकेशन को कमांड लाइन पैरामीटर्स का उपयोग करके कस्टम पोर्ट्स, डेटा डायरेक्टरीज़ और एक्सेस मोड के साथ शुरू किया जा सकता है।

Notepad3 is a lightweight Windows text editor designed as a replacement for the default system notepad. It is built on the Scintilla text engine to provide source code editing capabilities, including syntax highlighting, code folding, and automatic indentation. The editor is distinguished by its support for registry-free portable execution, allowing the application to run from removable storage without system installation. It features integrated file encryption and decryption tools for secure document management and a regular expression engine for complex search and replace operations across

Paperless-ng एक सेल्फ-होस्टेड डॉक्यूमेंट मैनेजमेंट सिस्टम है जिसे भौतिक कागजी कार्रवाई को सर्च करने योग्य डिजिटल फाइलों के रूप में आर्काइव करने के लिए डिज़ाइन किया गया है। यह एक वेब इंटरफेस के माध्यम से दस्तावेजों की एक डिजिटल लाइब्रेरी को स्कैन, इंडेक्स और व्यवस्थित करने के लिए एक प्राइवेट सर्वर के रूप में कार्य करता है। यह सिस्टम एक एन्क्रिप्टेड फाइल आर्काइव के रूप में कार्य करता है, जो संग्रहीत दस्तावेजों को सुरक्षित करने के लिए एक प्राइवेसी गार्ड बैकएंड का उपयोग करता है। यह डाउनलोड प्रक्रिया के दौरान ऑटोमैटिक ऑन-द-फ्लाई डिक्रिप्शन प्रदान करता है ताकि यह सुनिश्चित हो सके कि आर्काइव किए गए रिकॉर्ड स्टोरेज में सुरक्षित रहें। यह प्लेटफॉर्म स्कैन की गई इमेजेस और PDFs को डेटाबेस इंडेक्सिंग के लिए सर्च करने योग्य टेक्स्ट में बदलने के लिए ऑप्टिकल कैरेक्टर रिकग्निशन को शामिल करता है। यह नए अपलोड्स के लिए स्थानीय या नेटवर्क डायरेक्टरीज़ की निगरानी करके ऑटोमैटिक इंजेक्शन का भी समर्थन करता है।

unioffice is a comprehensive document processing suite that provides a PDF document processor, an Open XML document library, a document security toolkit, and a document content extractor. It is designed to programmatically create, read, and modify Word, Excel, and PowerPoint files, as well as generate and edit PDF documents. The project is distinguished by its native language implementation of the Open XML standard, which removes native binary dependencies to simplify container deployments. It features advanced capabilities for digital document security, including hardware-based PDF signing,

qpdf is a collection of specialized utility tools for the structural transformation, metadata inspection, file optimization, and cryptographic management of PDF documents. It provides a command line tool for transforming and inspecting internal PDF structures, a structural transformer for reorganizing pages and merging documents, and an encryption engine for managing passwords and restrictions. The project distinguishes itself through a technical approach to document manipulation, utilizing an object-based structural representation to modify files as a graph of unique objects. It includes a m

OpenEMR is an open-source electronic health record (EHR) system that also functions as a medical practice management platform and a patient portal, all integrated with standards-based health data exchange. It stores and manages patient health records, handles clinical workflows, supports scheduling and billing, and provides patients with secure self-service access to their information. Interoperability is built in via FHIR and C-CDA for exchanging records with external systems and Direct protocol for encrypted provider messaging. The system is designed to be extensible, with a modular plugin

DesktopEditors is an office suite application designed for creating and editing text documents, spreadsheets, and presentations across different operating systems. It serves as an OOXML compatible editor, ensuring that files are read and written according to Office Open XML standards for cross-platform document exchange. The suite functions as a collaborative document platform featuring real-time co-authoring, version tracking, and integrated communication tools. It also acts as an AI-powered document assistant and PDF editor, providing capabilities for content generation, automated spreadshe