ShareX is a free and open source program that lets you capture or record any area of your screen and share it with a single press of a key. It also allows uploading images, text or other types of files to many supported destinations you can choose from.

Free open source office suite with business productivity tools: document and project management, CRM, mail aggregator.

An unofficial implementation of Warpinator for Windows

Free file hosting website

https://tnxfr.com - App to share files & texts between your devices without installing anything

A Blazor WASM web application that offers end-to-end encrypted file and message transfer using Libsodium, Entity Framework, Hangfire, Docker, NUnit, and Mailkit.

A File System Filter Driver for file I/O monitors, file access control, transparent file encryption.

Omnius File Exchanger

Simple Open-Sourced C# CDN (Content Delivery Network) to host and cache files.

Manage your files/folders in Uptobox.com

AiurDrive is a free file sharing service. You can upload your files here and share them with others. Mirror of https://gitlab.aiursoft.cn/aiursoft/aiurdrive

Light-weight, cross-platform (NET Core 2.1) C# Asynchronous file server and text messaging platform. Utilizes custom extension methods which wrap asynchronous TCP socket method pairs, providing the benefits of the Task Parallel Library (TPL) to socket programming.

ONLYOFFICE DocSpace is a room-based collaborative platform which allows organizing a clear file structure depending on users' needs or project goals. Flexible access permissions and user roles allow fine-tuning the access to the whole space or separate rooms.

Email but with some extra steps and a terminal aesthetic

Transfer files easily through a simple, beautiful and convenient interface.

Source code (Azure Functions, AWS Lambda Functions and ASP.NET Core App) and PowerPoint deck from "A Tale of Two Clouds" session delivered at Dallas Tech Fest 17 on 6/2/2017.

FDownl is an innovating file sharing platform.

A cross-platform P2P file sharing CLI tool & protocol

.NET API Library for k2s.cc / keep2share.cc

FOSS privacy focused file sharing platform