head to head · open source
perspective vs preswald
perspective has 11,232 GitHub stars, 1,338 forks, 39 open issues and last shipped 3 days ago. preswald has 4,269 stars, 646 forks, 330 open issues and last shipped 3 months ago. perspective leads on adoption by 163% (11,232 vs 4,269 stars). perspective is written in Rust under Apache-2.0; preswald is written in Python under Apache-2.0. perspective has attracted 12% as many forks as stars, preswald 15%. perspective was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (analytics, data-visualization), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| perspective | preswald | |
|---|---|---|
| GitHub stars | ★ 11K | ★ 4.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Python |
| Last push | 2026-09-18 | 2026-06-11 |
| Forks | ⑂ 1.3K | ⑂ 646 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick perspective if
- You weight community size — 11K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick preswald if
- You want the preswald feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and preswald fits your workflow better
About perspective
Perspective is an interactive analytics and data visualization component for large, real time and streaming datasets, built for developers and data teams who create user configurable reports, dashboards and notebook applications on top of a high performance streaming query engine.
read the full perspective overview →
About preswald
Preswald is an Apache 2.0 Python static site generator that packages interactive data apps — compute, data access, and UI — into self contained .html files that run entirely in the browser on a WebAssembly runtime built from Pyodide and DuckDB, aimed at analysts, data engineers, and developers who need to hand a working dashboard, report, or inspection tool to someone who will not install anything.
read the full preswald overview →
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Frequently asked questions
Is perspective or preswald more popular?
perspective has 11,232 GitHub stars and preswald has 4,269. perspective has the larger community by that measure.
Are perspective and preswald free?
Both are open source. perspective is licensed under Apache-2.0 and preswald under Apache-2.0. Neither carries a licence fee.
What is the difference between perspective and preswald?
perspective is written in Rust and preswald in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, perspective or preswald?
Choose perspective if you want the larger community (11,232 stars) or its Apache-2.0 licence terms. Choose preswald if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.