Open Source Business & Productivity Tools

MuPDF

stars 3Kforks 500

Fast open source library for rendering and editing PDFs

PDF4QT

stars 1.5Kforks 150

Open source PDF editor and viewer for Windows and Linux

Keestash

stars 10forks 3

Self-hosted team password manager with web-based access control

LiVES

stars 102forks 13

Live video editing and VJ performance tool for GNU/Linux

Zettlr

stars 13.8Kforks 861

Open source Markdown editor for researchers and academics

Password Safe

stars 880forks 172

Store passwords in an encrypted local database, no cloud account

Cinelerra GG Infinity

stars 17forks 1

Professional video editing software for Linux, fully free

Budibase

stars 28.3Kforks 2.2K

Low-code platform for building internal apps, self-hosted

ToolJet

stars 41.1Kforks 5.5K

Build internal tools with a drag-and-drop UI and 50+ connectors

Zulip

stars 26Kforks 10.4K

Organized team chat with threaded conversations, self-hostable

Apache PDFBox

stars 3.1Kforks 967

Open source Java library for creating and parsing PDFs