
Asana
Trello
Obsidian
ClickUp
Evernote
Todoist
monday.com
All-in-one workspace. One tool for your whole team. Write, plan, and get organized.

Mitaka
WorldWide Telescope
Orbital
Solar Model
Space Engine
Cosmonium
Sky Guide
OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.

Which is more popular?
Based on our record, Notion seems to be more popular. It has been mentioned 442 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | notion.com | openspaceproject.com |
| Pricing | ||
| Company | Startup from the United States | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
The Most Powerful Productivity App I Use - Notion
More videos
Openspace Villa of Florence, Florence, Italy review
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Notion and OpenSpace. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


In short: The best project management tools for startups in 2026 are TechXaro One (best for small agencies), ClickUp (best free plan), Trello (cheapest paid plan), Notion (best for note-heavy teams), and Asana (best...
Okay, I know, I know. Notion is probably the most predictable pick for a productivity app list. But here’s the thing: It’s popular for a reason. Notion’s flexibility, customisation, and overall smooth user experience...
If you're looking for a Notion alternative that supports real, scalable teamwork, you're not alone. Whether you’ve outgrown Notion or are just exploring more robust, team-friendly platforms, here’s a breakdown of the...
We have no reviews of OpenSpace yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


- Annoying takeover of browser scrolling Of course you would be impressed if you see something like this the first time. If every third company has websites like this, it gets annoying. I don't remember any of them They look cool on... - Source: Hacker News / about 1 month ago
Two of the most popular open source note taking app are affine (basically notion but open source) and obsidian (which stores notes in markdown). - Source: dev.to / almost 2 years ago
Notion | https://notion.so | Android Engineer | SF | hybrid (in office 2x a week) | Full time- Source: Hacker News / about 2 years agoLevel: Mid/Mid+ (4-6yrs experience).
Tracking OpenSpace since Mar 2021.
When comparing Notion and OpenSpace, you can also consider the following products.

Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Compare Asana to Notion or OpenSpace:
Mitaka is software for visualizing the known Universe with up-to-date observational data and...
Compare Mitaka to Notion or OpenSpace:

Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Compare Trello to Notion or OpenSpace:

The WorldWide Telescope (WWT) is a Web 2.
Compare WorldWide Telescope to Notion or OpenSpace:

A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
Compare Obsidian to Notion or OpenSpace:

Orbital is an Arcade, Puzzle and Single-player video game created by Bitforge Ltd.
Compare Orbital to Notion or OpenSpace: