For personal analytics/dashboards, see Personal Dashboards
For everything else, see awesome-analytics
Archiving and Digital Preservation (DP)
Some Content Management System solutions also feature archiving and digital preservation.
Bookmarks and Link Sharing
Calendaring and Contacts Management
Some Groupware solutions also feature calendar/address book editing and synchronization.
CalDAV or CardDAV servers
CalDAV or CardDAV web-based clients
Custom communication systems
Mail Transfer Agents
Mail Delivery Agents
Mailing lists and Newsletters
IRC communication software
SIP/IPBX telephony software
Social Networks and Forums
Extensible Messaging and Presence Protocol software
XMPP Web Clients
Content Management Systems (CMS)
CMS are a practical way to setup a website with many features. CMS often come with third party plugins, themes and functionality that is easy to add and customize to your needs. See also Blogging Platforms and Static Site Generators
E-books and Integrated Library Systems (ILS)
Some Content Management System and Archiving and Digital Preservation solutions also overlap with library and institutional repository software.
Personal e-book management software.
Enterprise-class library management software.
Institutional repository and digital library software.
File Sharing and Synchronization
Some Groupware solutions also feature file sharing and synchronization.
Object storage/file servers
Command-line file upload
Web based file managers
Games, game servers and control panels.
Gateways and terminal sharing
Human Resources Management (HRM)
Internet Of Things (IoT)
Knowledge Management Tools
Learning and Courses
Maps and Global Positioning System (GPS)
Money, Budgeting and Management
See https://github.com/n1trux/awesome-sysadmin#monitoring and https://github.com/n1trux/awesome-sysadmin#metric--metric-collection
Note-taking and Editors
Photo and Video Galleries
Polls and Events
Booking and Scheduling
Read it Later Lists
Enterprise Resource Planning
Static site generators
See https://staticsitegenerators.net and https://www.staticgen.com
Task management/To-do lists
Before hosting one, please see shortcomings of URL shorteners.