the only cheat sheet you need

Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

⛅ The right way to check the weather

Command line interface for testing internet bandwidth using speedtest.net

Free and Open Source Machine Translation API. Self-hosted, offline capable and easy to setup.

Deduplicating archiver with compression and authenticated encryption.

Synapse: Matrix homeserver written in Python/Twisted.

Practical Python Programming (course by @dabeaz)

Mycroft Core, the Mycroft Artificial Intelligence platform.

🖥️📱🔔 A utility for sending notifications, on demand and when commands finish.

Execute a local command using the processing power of another Linux machine.

Social reading and reviewing, decentralized with ActivityPub

Network Automation and Programmability Abstraction Layer with Multivendor support

The Etebase server (so you can run your own)

A Matrix-Telegram hybrid puppeting/relaybot bridge

A command line tool (and Python library) for archiving Twitter JSON

ElectionGuard is a set of open source software components that can be used to create and publish end to end verifiable elections as well create a publishable artifact for ballot comparison audits.

A plugin-based Matrix bot system.

Modular telegram group management bot

simple but convenient CLI-based Matrix client app for sending and receiving

Convert Cloudformation templates to Terraform.

Extract firmware images from an Android OTA payload.bin file

Ansible playbooks for configuring and managing Splunk Enterprise and Universal Forwarder deployments

a bouncer-style Matrix IRC bridge

a token based matrix registration api

Python client for interacting with the SolarWinds Orion API

Command line admin tool for Synapse (the Matrix reference homeserver)

A WeeChat script that sends highlight and message notifications through notify-send

Generic modular bot for Matrix (and via it irc, telegram, slack, etc..)