If you want a customizable solution that can be adapted for just about any scenario, I recommend using Notion. If you need a solution that's easy to share with people outside your organization, Notion is great and allows individual or team permission-setting. If you want a turnkey solution, Notion might not be the best since it requires a fair bit of set-up. There are templates that can be purchased to handle this, but I haven't found them very helpful.
As a project management tool, especially with more straightforward timelines and components, ProjectLibre is a great alternative to some of the costly PM software tools. I have managed many projects with both MS Project and ProjectLibre, and I think ProjectLibre is a great alternative, especially when I've worked in regions of the world where users cannot afford other PM tools.
I use Notion on my personal tablet, and unlike on the computer, I have a lot of difficulty editing backgrounds, GIFs, and page dividers. It's not as user-friendly, and often the elements end up cut off or misaligned, which is frustrating.
While the current calendar feature is helpful, I'd love to see more customization options. The Google Calendar style isn't always ideal, especially for tasks without specific times or for ongoing projects that require daily maintenance.
It would be fantastic to have more flexibility in customizing Notion pages. For example, I'd love to create planners with the freedom to add illustration boxes, stickers, or GIFs without being restricted to a fixed layout.
Very easy to use (I learned how to use everything on my own) and I was able to set up an entire ecosystem without any courses or other tools. I often say that Notion is like Lego for adults, because there we can use all the available tools to create a multitude of things, from funnels to projects with calculated deadlines and tags.
There are a lot of discussions online about it, and a customer addition based manual. While that can lead to some confusion, I am not the kind of person who likes talking on the phone. So it is easier to go online with ProjectLibre!
The company uses both Notion and Trello within the company. Notion is more for North America employees while Trello is used between Operation team overseas and in North America. Sometimes it's a preference of how the tools look like for project management. I would say both Notion and Trello are nice tools and serves our needs.
We decided to go with ProjectLibre because it is a free tool and there is a great community that supports us in case there are any questions or concerns about the software. This has allowed us to be able to invest time without having to worry about licensing costs or anything else.