BEST OPEN SOURCE SOFTWARE TOOLS

Manage a non-profit food coop (product catalog, ordering, accounting, job scheduling)

CMS with a focus on extensible in-context editing tools

Lightweight and simple comment engine, which doesn't spy on users. It can be embedded into blogs, articles or any other place where readers add comments

Connect with friends across independent social networks

Collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect them

ActivityPub federated social network server implementing the Mastodon client API

Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API

A modern web IRC client with customizable themes.

Sympa manages email lists for communities and organizations

The complete, scalable, and open-source email, contacts, and calendar server.

All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features

Scalable open-source mail server with no single point of failure

Live chat software to engage visitors and convert them into customers

Next generation noIM application in your own workspace, not only another Slack/Discord/rocket.chat.

Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store

Minimal bookmark management with a fast and clean UI. Simple installation through Docker and can run on your Raspberry Pi

Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations

Writing software for starting a minimalist, federated blog — or an entire community

Simple, distributed task scheduler and runner with a web based UI

Business automation tool that lets you connect different services like Twitter, Slack, and more to automate your business processes (alternative to Zapier)

Automated Comic Book (cbr/cbz) downloader program for use with NZB and torrents

Fair, lightweight and open web analytics tool. Gain insights while your users have full access to their data

Easy web statistics without tracking of personal data

Tool designed to help engineering leaders measure and analyze the effectiveness of their teams using the DORA metrics