S Solo Free project management app created for freelancers. Create contacts, manage tasks, upload files, track project progress, and keep notes. Self-hostedFreeSoftware Development - Project Management ProprietaryPHP
SPIP Publication system for the Internet aimed at collaborative work, multilingual environments, and simplicity of use for web authors. Self-hostedOpen sourceContent Management Systems (CMS) GPL-3.0PHP
S SquirrelMail Another browser-based IMAP client. Self-hostedOpen sourceCommunication - Email - Webmail Clients GPL-2.0PHP
S SupportPal Powerful help desk software - easy, fast and intuitive. Self-hostedFreeTicketing ProprietaryPHP
S SyncMarks Sync and manage your browser bookmarks from Edge, Firefox and Chromium. Self-hostedOpen sourceBookmarks and Link Sharing AGPL-3.0PHP
T Tuleap Tuleap is a libre suite to plan, track, code and collaborate on software projects. Self-hostedOpen sourceSoftware Development - Project Management GPL-2.0PHP
Y Yetishare Powerful file hosting script with support for Amazon S3, Wasabi, Backblaze, local, direct and SFTP storage. Self-hostedFreeFile Transfer & Synchronization ProprietaryPHP