
Space Engine
Stellarium
Universe Sandbox
Heavens Above
Satscape
See A Satellite Tonight
ISS Detector
Real-time 3D visualization of space

PDFShift
DocRaptor
pdflayer
HTML2PDF.fr
PDFCrowd
Tcpdf
Api2Pdf
Easily generate PDF documents from HTML code with our powerful API

Which is more popular?
Based on our record, Celestia seems to be more popular. It has been mentioned 30 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | celestiaproject.space | htmlpdfapi.com |
| 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.
No description of HTML PDF API yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
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
More videos
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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 HTML PDF API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Celestia did all of this and more. 10+ years ago. https://celestiaproject.space/. - Source: Hacker News / about 1 month 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
An honorable mention: https://celestiaproject.space This but in 3D and adjustable for any date. - Source: Hacker News / over 2 years ago
Tracking HTML PDF API since Mar 2021.
When comparing Celestia and HTML PDF API, 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 HTML PDF API:

Convert any HTML documents to high-fidelity PDF using a single POST request
Compare PDFShift to Celestia or HTML PDF API:

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

As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
Compare DocRaptor to Celestia or HTML PDF API:

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 HTML PDF API:

Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Compare pdflayer to Celestia or HTML PDF API: