Together we know everything, together we have everything
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- Ubuntu - Very user-friendly distribution of GNU/Linux for desktop computers
 
- LibreOffice - Full, open source office suite
 - Nextcloud - Awesome self-hosted full GSuite alternative with encryption and collaboration suite
 - Syncthing - Torrent-like federated cloud storage (and collaboration suite)
 - Doodle - Collaborative meeting/event scheduler (Freemium & Commercial)
 
- Loomio - Free and open-source collaborative decision making and forum software
 - Consul - Free and open-source collaborative decision making and budgeting software used by many government bodies all around the world.
 - Decidim - free open-source participatory democracy for cities and organizations
 
- HumHub - Semi open-source social intranet software
 - Elgg - Well documented, free and open-source social intranet software
 
- Google for Nonprofits - Google's services for nonprofits including Gsuite(Freemium)
 - Yandex.Mail for Domian - Free Yandex Mail service up to 1000 inboxes(Freemium)
 
- Trello - Easy to use, kanban style collaborative project management system(Freemium & Commercial)
 - Taiga - Open source project management project software
 - OpenProject - Open soruce project management software written with Ruby
 - Redmine - Fully-featured, free and open-source project management software written in Ruby on Rails
 
- Slack for Nonprofits - 85% discount on Slack plans(Freemium & Commercial)
 - Mattermost - Semi open-source Slack alternative
 - Riot - Open source, secure, decentarilized chat system
 - Ring - Open source, secure Skype replacement
 
- Jitsi - Jitsi is a set of open-source projects that allows you to easily build and deploy secure videoconferencing solutions.
 
- Scribus - Fully featured, free and open-source desktop publishing tool
 
- OBS - Free and open source video recording and live streaming tool.
 
- Wordpress - World's most famous open source CMS
 - Drupal - Open-source security-first approach CMS
 - Joomla! - An award-winning free and open source CMS
 - TYPO3 - Fully featured and reliable, free, open source enterprise CMS
 
- CiviCRM - Open source CRM system for NGOs works on Wordpress, Drupal, Joomla
 - Odoo - Semi-open source ERP(Commercial Software)
 - ERPNext - Open source fully featured ERP written in Python
 - Tendenci - Free and open-source fully featured association management software including membership management, recurring donations, event management, website builder, human resources management and many more
 
- HDX - Humanitarian Data Exchange
 - Open Data Kit - Open Data Kit community produces free and open-source software for collecting, managing, and using data in resource-constrained environments.
 - Ona - Open source data collection platform
 - KoBoToolbox - Open source data collection toolset
 - Data Coomons - Aggregates data from a wide variety of sources into single database.
 
- Casebox - Open source case management and organization-wide collaboration software
 - Nuxeo - Semi open-source content management system for business applications
 - Primero - Primero is an open-source application designed to help child protection workers and social workers in humanitarian and development contexts manage data on vulnerable children and survivors of violence.
 
- Redash - Open-source business intelligence & data visualizer
 - Metabase - Data Visualizer with wide support for many databases
 - Google DataStuido - Google's data visualization platform(Freemium & Commercial)
 - Tableau Public - Free Tableau services for public(Freemium)
 
- Ushahidi - Awesome geo data content managment & collection system
 - Sahana EDEN - Open source disaster management software
 - MissingMaps
- MapSwipe - Open source mobile apps for missingmaps project
 
 - OpenMapKit - Open Data Collection Platform
 - OpenStreetMaps - Open source extensive mapping solutions
 - Cadasta - An open and flexible suite of mobile and web based tools designed to help users collect, manage, and store land and resource rights data
 - GeoNode - Free and open-source geospatial content management system written in Django
 
- HospitalRun - Free and open-source healthcare/hospital management software
 - OpenMRS - Free and open-source medical record system
 
- NonprofitWP - Complete wordpress guide for nonprofits
 - awesome-wordpress - Yet another awesome project for Wordpress
 
- HFOSS - Yet another curated list of Humanitarian Free Open Source Softwares
 
- Awesome Project - For this awesome project
 - awesome-postgres - For their contribution guidelines
 - P2P Foundation - For the motto