Self-hosting

AnonAddy provides an email forwarding service that keeps personal email addresses private.

BigBlueButton is an open-source video communication tool with all the required features for online training and learning including breakout rooms, whiteboards, closed captioning, polls, shared notes, and more.

[S]ign up for BigBlueButton managed by NoLog.cz, CommunityBridge, meet.coop, and other providers.
– Digital Hygiene 101: How to practise digital safety and security

Bitwarden is a cross-platform open-source password manager.

CryptPad is an open-source encrypted collaboration suite for securely storing, editing, and sharing spreadsheets, documents, presentations, forms, and other types of files.

Etherpad is an open-source collaborative notetaking tool.

Riseup Pad allow for collaborative editing online by using an Etherpad service. Riseup does not store IP addresses. Pads are automatically destroyed after 60 days of inactivity.
– Digital Hygiene 101: How to practise digital safety and security

Firefox Relay provides disposable unique forwarding email addresses to help users mask their personal email addresses on e-commerce sites, social networking platforms, sign-up forms, and more.

GlobaLeaks is a free and open-source secure reporting and documentation system that protects the whistleblower’s identity.

Jitsi Meet is an open-source private video conferencing software that limits the user’s digital footprint when meeting virtually. It works on most modern internet browsers and is also available as a mobile app for Android and iOS.

You can use meet.jit.si to host your online meetings for free […] Other trusted free Jitsi Meet deployments include Greenhost, Framatalk, and Distroot.
– Digital Hygiene 101: How to practise digital safety and security

KeeWeb is an open-source password manager based on KeePass. It is available as a web app that works with modern internet browsers on desktop and mobile devices.

Mattermost is an open-source collaborative chat for teams.

Nextcloud is an open-source collaboration suite with secure file storage, sync, and share.

OnlyOffice is an office suite of online editors for text documents, spreadsheets, and presentations.

Outline makes it easy for users to access the internet using a virtual private network (VPN). The Outline Manager enables users to run their own VPN servers on cloud platforms and the Outline Client connects devices to existing servers.

SecureDrop is an open-source whistleblowing system designed for media practitioners to receive information from sources securely and anonymously on the web.

Send is a simple, private file-sharing tool with end-to-end encryption.

Standard Notes is a note-taking app with end-to-end encryption, advanced security, and privacy controls.

Zulip is an open-source collaborative chat for teams.