Mailbox.org
Description: Mailbox.org is an email provider based in Germany that offers secure and private email accounts with end-to-end encryption. It has customizable email aliases, domains, and passwords along with built-in calendar, contacts, and cloud storage.
Type: software
Mattermost
Description: Mattermost is an open-source, self-hosted online chat service with file sharing, search and integration capabilities. It supports text, images, videos and custom emojis across PCs and phones with instant notifications.
Type: software
Pricing: Freemium