Peer-to-peer software

Skype () was a proprietary telecommunications application operated by Skype Technologies, a division of Microsoft, best known for IP-based videotelephony, videoconferencing and voice calls. It also had instant messaging, file transfer, debit-based calls to landline and mobile telephones (over traditional telephone networks), and other features. It was available on various desktop, mobile, and video game console platforms.

PeerTube is a free and open-source, decentralized, ActivityPub federated video platform. It can use peer-to-peer technology to reduce load on individual servers when videos get popular.

Joost () was an Internet TV service, created by Niklas Zennström and Janus Friis (founders of Skype and Kazaa). During 2007–2008 Joost used peer-to-peer TV (P2PTV) technology to distribute content to their Mozilla-based desktop player; in late 2008 this was migrated to use a Flash-based Web player instead.

YaCy (pronounced “ya see”) is a free distributed search engine built on the principles of peer-to-peer (P2P) networks, created by Michael Christen in 2003. The engine is written in Java and distributed on several hundred "YaCy-peer" computers, .

Kazaa Media Desktop ( ; once stylized as "KaZaA", but later usually written "Kazaa") was a peer-to-peer file sharing application using the FastTrack protocol licensed by Joltid Ltd. and operated as Kazaa by Sharman Networks. Kazaa was subsequently under license as a legal music subscription service by Atrinsic, Inc., which lasted until August 2012.

Syncthing is a peer-to-peer file synchronization utility, designed to sync files between devices on a local network or between remote devices over the Internet. It runs on Windows, macOS, Linux, Android, iOS, *BSD and illumos. The software is free and open source, and its version 1.0 was released in 2019 after 5 years in beta.

Retroshare is a free and open-source peer-to-peer communication and file sharing app based on a friend-to-friend network built by GNU Privacy Guard (GPG). Optionally peers may exchange certificates and IP addresses to their friends and vice versa.

Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol that can be used by one person to send encrypted messages to another person, or to multiple subscribers.

peer-to-peer collaboration program developed by Microsoft

WebTorrent is a peer-to-peer (P2P) streaming torrent client written in JavaScript that enables BitTorrent functionality directly within web browsers. Created by Feross Aboukhadijeh, the developer behind YouTube Instant, WebTorrent implements the BitTorrent protocol using WebRTC for peer-to-peer data transfer, allowing users to download and stream torrents without requiring traditional torrent client software.

web browser software

South Korean internet streaming platform

OpenBazaar was an open source project developing a protocol for e-commerce transactions in a fully decentralized marketplace. It used cryptocurrencies as medium of exchange and was inspired by a hackathon project called DarkMarket.

PPTV () is a Chinese video streaming website. Its predecessor, PPLive, was peer-to-peer streaming video freeware created at the Huazhong University of Science and Technology in Wuhan, Hubei Province. The group of companies that runs the website was headed by Cayman Islands-incorporated offshore company PPLive Corporation. However, the actual operations were mainly carried out by Shanghai SynaCast Media Tech Co., Ltd. ().