OrgPad is described as 'Do you like to spend time figuring out how to use that overcomplicated tool? No? We don't like it too. We focus on minimalistic design. We do the heavy lifting for you. One example: we spend three days choosing colors that look great so you don't have to' and is an website in the Office & Productivity category. There are more than 25 alternatives to OrgPad, not only websites but also apps for a variety of platforms, including Mac, Windows, iPhone and iPad. The best alternative is Joplin, which is both free and Open Source. Other great sites and apps similar to OrgPad are Standard Notes (Freemium, Open Source), Notion (Freemium), Google Keep (Free) and Microsoft OneNote (Freemium).
Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor.
With so many tools, it's hard to keep everyone on the same page. Notion is a new tool that unifies them all. It's like Google Docs, but everything is organized and discoverable by your team. Real collaboration in real-time.
Workflowy lets you organise your brain into easily manageable lists. It also works as a single-pane outliner with inline notes. It offers one-click hoisting (zooming into branches). The online version syncs with mobile apps.