#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
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Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.
Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets
Xournal++ is a handwriting notetaking software with PDF annotation support. Written in C++ with GTK3, supporting Linux (e.g. Ubuntu, Debian, Arch, SUSE), macOS and Windows 10. Supports pen input from devices such as Wacom Tablets.
- notetaking
- crossplatform
- gtk3
- c-plus-plus
QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.
- nuget
- c-sharp
- dotnet-core
Grist is the evolution of spreadsheets.
Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind.
Free, open-source AI Office suite: Docs, Sheets, Slides, PDF, Markdown and HTML editors with a built-in AI agent, plus a `genoffice` CLI and agent skill so Claude Code, Codex and Cursor can create and edit real .docx/.xlsx/.pptx files locally. Bring your own key. macOS, Windows & Linux.
💻 Democratizing Snippet Management (macOS/Win/Linux)
Minimalist and opinionated feed reader
- feed
- rss
- atom
- jsonfeed
The Swift code generator for your assets, storyboards, Localizable.strings, … — Get rid of all String-based APIs!
- ios
- swift
- code-generator
- templates
Jspreadsheet is a lightweight JavaScript data grid component for creating interactive data grids with advanced spreadsheet controls.
- javascript
- spreadsheet
- table
- datatables
ONLYOFFICE Docs is a free collaborative online office suite comprising viewers and editors for texts, spreadsheets and presentations, forms and PDF, fully compatible with Office Open XML formats: .docx, .xlsx, .pptx and enabling collaborative editing in real time.
Think fearlessly with end-to-end encrypted notes and files. For issues, visit https://standardnotes.com/forum or https://standardnotes.com/help.
Roo provides an interface to spreadsheets of several sorts.
Helpy is a modern, open source helpdesk customer support application. Features include knowledgebase, community discussions and support tickets integrated with email.
- helpdesk
- knowledge-base
- forum
- support
EPPlus-Excel spreadsheets for .NET
- net
- netframework
- netcore
- netstandard
LaTeX plugin for Sublime Text
- sublime-text
- sublime-text-package
- sublime-text-plugin
- latex
This repository is outdated and no longer maintained. A new version of massCode is available! https://github.com/massCodeIO/massCode. A free and open source code snippets manager for developers.
A free Wenku8 and local-book reader for Android, iOS and HarmonyOS, with offline reading, text-to-speech, reading reports, widgets and S3 sync.
Spreadsheet Architect is a library that allows you to create XLSX, ODS, or CSV spreadsheets super easily from ActiveRecord relations, plain Ruby objects, or tabular data.
Self-hosted gym & body-weight tracker — plan routines, log workouts (supersets & cardio too), track your weight and progress, passkey login. Your data, your server.
PiPifier is a native macOS 10.12 Safari extension that lets you use every HTML5 video in Picture in Picture mode
- my-apps
Passive API key and secret discovery browser extension for Chrome and Firefox. 80+ detection patterns, zero config.
- pentesting
- security
- chrome-extension
- api-keys