
Space Engine
Stellarium
Universe Sandbox
Heavens Above
Satscape
See A Satellite Tonight
ISS Detector
Real-time 3D visualization of space
Mem0
Mem
Pieces for Developers
cognee
MemoryPlugin
Claude Memory
Mengram
Memory and continual learning for agents
Which is more popular?
Based on our record, Celestia should be more popular than Supermemory. It has been mentioned 31 times since March 2021.
Website, pricing, platforms and company facts side by side.
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Supermemory
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| Website | celestiaproject.space | supermemory.ai |
| Pricing | — | |
| Company | 2001 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

The expandable free and open-source real-time space simulator that lets you explore our universe in three dimensions.
Agents need memory. supermemory is building the default engine for memory and continual learning for agents, available through an API, plugins, and MCP. Memory that keeps learning. supermemory extracts and dreams on the context of every user, task, and tenant, stores it in a vector-graph...
What each product offers, as listed by its team.

Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Celestia Review - with Tom Vasel
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Celestia and Supermemory. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

The 1st image in that article looks like Celestia. It would be nice to have an add-on for Celestia once enough details are known about 2026 ED138. https://celestiaproject.space/. - Source: Hacker News / 2 days ago
Celestia did all of this and more. 10+ years ago. https://celestiaproject.space/. - Source: Hacker News / about 2 months ago
Incredible work! My son really had a blast scrolling around and exploring last night. Did you take any inspiration from Celestia (https://celestiaproject.space)? It's been over 15 years since I last really used it (and starts with... - Source: Hacker News / almost 2 years ago
This is usually a challenge that any developer has to take care of when building an AI agent. In fact, managing the context is one of the hardest problems when working with AI agents and there are many companies like SuperMemory, Mem0... - Source: dev.to / 4 months ago
Memory. I use Supermemory for this. Before, Pipa loaded context files and knew to update them. A memory tool adds teammate-like recall: goals, preferences, latest business state, and small details that should carry across runs. Good... - Source: dev.to / 5 months ago
We wire everything up with Vision Agents as the voice agent framework, Stream for WebRTC audio and video, OpenAI Realtime for speech in and speech out, Anam so the agent shows up as a face on the video, and Supermemory so answers come... - Source: dev.to / 6 months ago
When comparing Celestia and Supermemory, you can also consider the following products.

Space Engine is a realistic virtual Universe you can explore on your computer.
Compare Space Engine to Celestia or Supermemory:


Stellarium is a free open source planetarium for your computer.
Compare Stellarium to Celestia or Supermemory:


Universe Sandbox ² is a physics-based space simulator where you can simulate Events and even break physics and friction with certain features.
Compare Universe Sandbox to Celestia or Supermemory:

Centralized code snippet manager to streamline your workflow
Compare Pieces for Developers to Celestia or Supermemory: