head to head · open source
gs-quant vs c15t
gs-quant has 13,876 GitHub stars, 1,928 forks, 73 open issues and last shipped 6 days ago. c15t has 2,018 stars, 266 forks, 27 open issues and last shipped yesterday. gs-quant leads on adoption by 588% (13,876 vs 2,018 stars). gs-quant is written in Python under Apache-2.0; c15t is written in TypeScript under Apache-2.0. gs-quant has attracted 14% as many forks as stars, c15t 13%. c15t was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| gs-quant | c15t | |
|---|---|---|
| GitHub stars | ★ 14K | ★ 2.0K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-10-28 | 2026-11-02 |
| Forks | ⑂ 1.9K | ⑂ 266 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick gs-quant if
- You weight community size — 14K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick c15t if
- You want the c15t feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and c15t fits your workflow better
About gs-quant
GS Quant GS Quant is a Python toolkit for quantitative finance, created on top of one of the world’s most powerful risk transfer platforms. Designed to accelerate development of quantitative trading strategies and risk management solutions, crafted over 25 years of experience navigating global markets. It is created and maintained by quantitative developers (quants) at Goldman Sachs to enable the development of trading strategies and analysis of derivative products. GS Quant can be used to facilitate derivative structuring, trading, and risk management, or as a set of statistical packages for data analytics…
read the full gs-quant overview →
About c15t
c15t is a developer first consent management platform (CMP) used by 2,100+ sites, including expo.dev, zed.dev, and unkey.dev. It helps JavaScript, React, and Next.js teams build cookie banners, preference centers, privacy preferences, and fully headless consent flows, with integrations for Google Tag Manager, Google Consent Mode v2, Meta Pixel, IAB TCF 2.3, and more. Overview c15t keeps consent management inside your application stack instead of a black box third party snippet. Use the prebuilt UI for cookie banners, consent dialogs, and preference centers, or use the headless APIs to build a fully custom…
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Frequently asked questions
Is gs-quant or c15t more popular?
gs-quant has 13,876 GitHub stars and c15t has 2,018. gs-quant has the larger community by that measure.
Are gs-quant and c15t free?
Both are open source. gs-quant is licensed under Apache-2.0 and c15t under Apache-2.0. Neither carries a licence fee.
What is the difference between gs-quant and c15t?
gs-quant is written in Python and c15t in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, gs-quant or c15t?
Choose gs-quant if you want the larger community (13,876 stars) or its Apache-2.0 licence terms. Choose c15t if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.