P Plone CMS system that is used to create, edit, and manage digital content, like websites, intranets, and custom solutions. Self-hostedOpen sourceContent Management Systems (CMS) ZPL-2.0Python
P PmWiki Wiki-based system for collaborative creation and maintenance of websites. Self-hostedOpen sourceWikis GPL-3.0PHP
P Poste.io Full-featured solution for your Email server. Native implementation of last anti-SPAM methods, webmail and easy administration included. Free tier available. Self-hostedFreeSelf-hosting Solutions ProprietaryUnknown
Postfix Fast, easy to administer, and secure Sendmail replacement. Self-hostedOpen sourceCommunication - Email - Mail Transfer Agents IPL-1.0C
P PrivMX WebMail Web-based, end-to-end encrypted email platform that uses an independent PKI. Self-hostedFreeCommunication - Custom Communication Systems ProprietaryPHP
P Privoxy Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Self-hostedOpen sourceProxy GPL-2.0C
P ProjeQtOr Complete, mature, multi-user project management system with extensive functionality for all phases of a project. Self-hostedOpen sourceSoftware Development - Project Management AGPL-3.0PHP
P Prosody IM Feature-rich and easy to configure XMPP server. Self-hostedOpen sourceCommunication - XMPP - Servers MITLua
Q QST Online assessment software. From a quick quiz on your phone to large scale, high stakes, proctored desktop testing, easy, secure and economical. Self-hostedOpen sourceLearning and CoursesKnowledge Management Tools GPL-2.0Perl
Readeck Save the precious readable content of web pages you like and want to keep forever. See it as a bookmark manager and a read later tool. Self-hostedOpen sourceBookmarks and Link SharingArchiving and Digital Preservation (DP) AGPL-3.0Go
Redmine Flexible project management web application. Self-hostedOpen sourceSoftware Development - Project Management GPL-2.0Ruby
R RemoteUtilities Remote support software for LAN administration and remote support over the Internet. Self-hostedFreeMiscellaneous ProprietaryUnknown
RepoFlow Simplify package management for npm, PyPI, Docker, Go, Helm, and more. Try it for free with 10GB storage, 10GB bandwidth, 100 packages, and unlimited users in the cloud, or self-hosted for personal use only. Self-hostedFreeSoftware Development - IDE & Tools ProprietaryNodejs
R Reservo Scalable image hosting script with support for CDNs, paid account upgrades, advertising spots and drag & drop upload. Self-hostedFreePhoto Galleries ProprietaryPHP
Resilio Sync Proprietary peer-to-peer file synchronisation tool. Self-hostedFreeFile Transfer & Synchronization ProprietaryUnknown
R ResourceSpace Simple, fast, and free way to organise your digital assets. Self-hostedOpen sourceFile Transfer - Web-based File Managers BSD-4-ClausePHP
RhodeCode Unify and simplify repository management for Git, Subversion, and Mercurial. Self-hostedOpen sourceSoftware Development - Project Management AGPL-3.0Python
R Roundup Issue Tracker Simple-to-use and -install issue tracking system with command-line, web, REST, XML-RPC, and e-mail interfaces. Designed with flexibility in mind - not just another bug tracker. Self-hostedOpen sourceTicketing MITPython
R rs-short Lightweight link shortener written in Rust, with features such as caching, spambot protection and phishing detection. Self-hostedOpen sourceURL Shorteners MPL-2.0Rust
R Rukovoditel Configurable open source project management, web-based application. Self-hostedOpen sourceSoftware Development - Project Management GPL-2.0PHP
Rygel UPnP AV MediaServer that allows you to easily share audio, video, and pictures. Media player software may use Rygel to become a MediaRenderer that may be controlled remotely by a UPnP or DLNA Controller. Self-hostedOpen sourceMedia Streaming - Multimedia Streaming LGPL-2.1C
S Salut à Toi Multipurpose, multi frontend, libre and decentralized communication tool. Self-hostedOpen sourceCommunication - XMPP - Web Clients AGPL-3.0Python
S Samba Samba is the standard Windows interoperability suite of programs for Linux and Unix. It provides secure, stable and fast file and print services for all clients using the SMB/CIFS protocol. Self-hostedOpen sourceFile Transfer & Synchronization GPL-3.0C
S SANE Network Scanning Allow remote clients to access image acquisition devices (scanners) available on the local host. Self-hostedOpen sourceMiscellaneous GPL-2.0C
S Schleuder GPG-enabled mailing list manager with resending-capabilities. Self-hostedOpen sourceCommunication - Email - Mailing Lists and Newsletters GPL-3.0Ruby
ScreenConnect Lightning-fast remote support and remote access to connect instantly and solve problems faster. Self-hostedFreeMiscellaneous ProprietaryUnknown
S SeedDMS Document Management System with workflows, access rights, fulltext search, and more. Self-hostedOpen sourceDocument Management GPL-2.0PHP
S Sendmail Message transfer agent (MTA). Self-hostedOpen sourceCommunication - Email - Mail Transfer Agents SendmailC
S Sendy Self-hosted email newsletter application that lets you send bulk emails via Amazon Simple Email Service (SES) or other SMTP services. Self-hostedFreeCommunication - Email - Mailing Lists and Newsletters ProprietaryPHP