Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.

PrestaShop is a free, open source e-commerce solution.

Zulip is a chat and collaborative software.

Pinry is a tiling image board system for people who want to save, tag, and share images, videos and webpages.

YaCy (ya see) is a free distributed search engine, built on principles of peer-to-peer (P2P) networks.

Sentrifugo HRMS provides many features including Expense & Asset management, Performance management, Employee Self-Service, Analytics, etc.

Gratipay is an open source fundraising platform.

Element Hiding Helper for Adblock Plus a helper extension for Adblock plus extension.