A self-hosted service that pings webhooks or other URLs on a user-defined schedule. Works a little bit like cron. Can even do things every X minutes or hours, like cron.
Written in PHP, uses SQLite.
If you don't want to set it up yourself: https://hookless.co/
Lightweight asynchronous task execution service. Tries to replace RabbitMQ and Celery for lightweight (Python specifically, for some reason). Randomizes when retriesare done. POST base64 encoded URL to an endpoint and when you want it to run, and it'll hit that URL at the right time.
A python module (Python3, specifically - Python2 support was obsoleted) that tries to be the Requests of HTML scraping. Designed with news sites in mind. Picks out names of authors, publication dates, text, URLs to images, any embedded media. keyword analysis. NLP Picks articles out of websites. URL extraction. Picks out categories. i18n support.
Documentation here: https://newspaper.readthedocs.io/en/latest/