How to verify if a 'free' data grid is truly free before you build on it

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A developer at KanuniLabs has outlined a set of terminal-based checks anyone can run to verify whether a so-called free data grid component is genuinely free for their use case. The guide was prompted by the company discovering its own pricing page had incorrectly listed a paid feature under the free tier. Key checks include reading the LICENSE file shipped with the installed package, inspecting declared dependencies for any paid packages, and directly testing critical features in Node to see if they throw a paywall error. The article notes that KanuniLabs' own free tier permits commercial and SaaS use but prohibits modification and inclusion in competing component libraries or toolkits. Developers are advised to save a copy of the LICENSE file alongside release notes to track any future changes to the terms they originally agreed to.

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