I use the Things app as the task manager, it’s been over a few years since I’ve been using it as my primary task manager. I even have a few zapier automations that funnel tasks from Gmail (office emails) and Slack into Things for getting to them later on time.
With Safari, there is a share sheet that can help you add a web page to the task manager, but it didn’t really work with Chrome/Firefox. I searched for an extension and could only find an inspiration. There was an extension that used to do this on Chrome and wasn’t being maintained. It didn’t work for the latest versions of Chrome. So I tweaked it, then packed it and released. It’s now available on Chrome Web store here. (Update 28 Aug 2024) It’s also now available as a Firefox add-on here.
The code is also available for any reviews and is accessible from here.
If you use the Things app, do give the extension a try and if you are dev, feel free to enhance it in any way possible and fork it in the extension directory. Thanks.