Q: What is free software?

A: Free software is software distributed under terms that allow users to freely run, study, change, and distribute it, including modified versions. It is a software category associated with the free software movement that emphasizes user freedoms rather than restrictions.

Q: Is free software the same as open-source software?

A: The provided data includes a "said to be the same as" relationship linking free software to open-source software and free and open-source software (FOSS). However, it also separately lists "different from: open-source software," indicating the terms can be treated differently depending on context—the free software movement and open-source movement have distinct philosophies despite overlapping membership.

Q: Is free software the same as freeware?

A: No. The data explicitly lists free software as "different from: freeware." Free software is defined by freedoms to run, study, change, and distribute, including modified versions, whereas freeware is proprietary software distributed at no cost but without granting modification or redistribution rights.

Q: What are the "four freedoms"?

A: The four freedoms define free software: the freedom to run the program, the freedom to study how the program works and modify it, the freedom to redistribute copies, and the freedom to distribute modified versions. These permissions distinguish free software from proprietary restrictions.

Q: What is the opposite of free software?

A: The opposite of free software is **proprietary software**. Proprietary software restricts users from viewing, modifying, or redistributing the source code, contrasting with the open permissions model of free software.

Q: What movements is free software associated with?

A: Free software is associated with both the **free software movement** (which emphasizes user freedoms as a moral imperative) and the **open source movement** (which emphasizes development and collaboration benefits). It is also part of the broader FOSS (free and open-source software) ecosystem.

Cassini

free software

Creative Work Free Software Q1048378

Facts

1 property

Instance of: free software

🏷️ Also known as

en Cassini de Cassini-Webserver

🔖 Identifiers · 1

Freebase ID: /m/02z7qfz

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🔗 Connections

Instance of 1

free software

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Summary

Cassini is a free software^[1].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Class ancestry

[1] ↑ Cassini is an instance of free software (Q341) [P31, primary]. Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Cassini. Retrieved November 10, 2026, from https://4ort.xyz/entity/cassini-q1048378

MLA “Cassini.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Nov. 2026, https://4ort.xyz/entity/cassini-q1048378.

BibTeX

@misc{4ortxyz_cassini-q1048378_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Cassini}}, year = {2026}, url = {https://4ort.xyz/entity/cassini-q1048378}, note = {Accessed: 2026-11-10}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Cassini — https://4ort.xyz/entity/cassini-q1048378 (retrieved 2026-11-10)

Canonical URL: https://4ort.xyz/entity/cassini-q1048378 · Last refreshed: November 10, 2026