NoStash is described as 'web app to keep your notes organized and searchable, is indie, ethical and future proof. Indie: developed by a tiny team without funds. Ethical, your privacy and your notes are before everything else. Future Proof: the founder use it' and is an app in the Office & Productivity category. There are more than 100 alternatives to NoStash for a variety of platforms, including Online / Web-based, Windows, Mac, SaaS and iPhone. The best alternative is Obsidian. It's not free, so if you're looking for a free alternative, you could try Notion or Microsoft OneNote. Other great apps like NoStash are Evernote (Freemium), CherryTree (Free, Open Source), Zim (Free, Open Source) and NoteLedge (Paid).
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.